Garmin
Forerunner® 165 vs Lily® 2
Size, specs & wrist fit compared
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Which one fits you
On wrists narrower than about 45mm, the Lily® 2 is the safer pick — it stays proportionate down to roughly 37mm, where the Forerunner® 165 starts to hang over the edge. Above 45mm both sit cleanly, and the Forerunner® 165 gives you more presence.
The Forerunner® 165 wears larger than the Lily® 2 (43mm vs 35.4mm case), giving it more wrist presence — and needing a wider wrist to sit cleanly.
The Lily® 2 is the slimmer of the two (10.1mm vs 11.6mm), so it slides under a cuff more easily.
On the wrist the Lily® 2 feels lighter (24.4g vs 39g, case only).
Among the 312 43mm watches we hold thickness for, the Forerunner® 165 is thinner than 86%, so it wears flatter than its width suggests.
The Lily® 2 is middle-of-the-pack for thickness among the 105 35mm watches in the database.
The Forerunner® 165 is 7.6mm wider, 7.6mm longer, 1.5mm thicker and 14.6g heavier than the Lily® 2. Both are circular.
Forerunner® 165
Lily® 2
Case width
43mm
35.4mm−7.6mm
Lug-to-lug
43mm
35.4mm−7.6mm
Thickness
11.6mm
10.1mm−1.5mm
Weight
39g
24.4g−14.6g
Switch or add watches
Garmin
Forerunner® 165
Garmin
Lily® 2
2D Dimension Schematics
Every case drawn to scale on a shared centre — from above, and in profile against the wrist.
Highlight
- Garmin Forerunner® 16543mm · 11.6mm thick
- Garmin Lily® 235.4mm · 10.1mm thick
3D preview
Forerunner® 165 vs Lily® 2 on a wrist
Sized to your own wrist, turned any way you like.
Shapes are built from published measurements, not manufacturer 3D models — accurate proportions, generic dial.
Battery life compared
Runtime for every power mode either watch publishes, aligned by mode.
Forerunner® 165Lily® 2
Battery Saver Smartwatch
20 days—Smartwatch
11 days—Battery life
—5 daysGPS-Only GNSS
19 hours—All-Systems GNSS
17 hours—
Specifications
The short version
7 key specs| Spec | GarminForerunner® 165 | GarminLily® 2 |
|---|---|---|
| Case Width | 43mm | 35.4mm |
| Thickness | 11.6mm | 10.1mm |
| Weight | 39g | 24.4g |
| Shape | Circular | Circular |
| Display type | AMOLED (optional always-on mode) | Liquid Crystal |
| Battery life | Smartwatch mode: Up to 11 days Battery Saver Smartwatch mode: Up to 20 days GPS-Only GNSS mode: Up to 19 hours All-Systems GNSS mode: Up to 17 hours See Details | Up to 5 days See Details |
| Released | 2024 | 2024 |
Every specification
193 specs| Spec | Garmin Forerunner® 165 | Garmin Lily® 2 |
|---|---|---|
| Overview | ||
| Family | Garmin | Garmin |
| General | ||
| Battery life | Smartwatch mode: Up to 11 days Battery Saver Smartwatch mode: Up to 20 days GPS-Only GNSS mode: Up to 19 hours All-Systems GNSS mode: Up to 17 hours See Details | Up to 5 days See Details |
| Battery type | Lithium ion | — |
| Display Size | 1.2" (30.4 mm) diameter | 1.00” x 0.84” (25.4 mm x 21.3 mm) |
| Color display | Yes | no (16 level grayscale) |
| Lens Material | chemically strengthened glass | Corning® Gorilla® Glass 3 |
| Bezel Material | fiber-reinforced polymer | anodized aluminum |
| Memory/History | 4 GB | 7 timed activities; 14 days of activity tracking data |
| Strap material | silicone | silicone |
| Charging method | Garmin proprietary plug charger | Garmin proprietary clip charger |
| Large font option | Yes | — |
| Display resolution | 390 x 390 pixels | 240 x 201 pixels |
| Quick Release bands | yes (20 mm, Industry standard) | Yes |
| Case material | — | anodized aluminum |
| Sensors | ||
| GPS | Yes | — |
| Compass | Yes | — |
| GLONASS | Yes | — |
| Galileo | Yes | — |
| Thermometer | Yes | — |
| Accelerometer | Yes | Yes |
| Ambient light sensor | Yes | Yes |
| Barometric altimeter | Yes | — |
| Pulse Ox Blood Oxygen Saturation Monitor | Yes | Yes |
| Garmin Elevate™ wrist heart rate monitor | Yes | Yes |
| Product Info | ||
| Main SKU | 010-02863-20 | 010-02839-01 |
| Product ID | 1055469 | 950277 |
| Product Name | Forerunner® 165 | Lily® 2 |
| Release Date | 2/20/2024 | 1/8/2024 |
| Product Variation | Black/Slate Gray | Metallic Lilac with Lilac Silicone Band |
| Clock Features | ||
| Timer | Yes | Yes |
| Stopwatch | Yes | Yes |
| Time/date | Yes | Yes |
| Alarm clock | Yes | Yes |
| GPS Time Sync | Yes | — |
| Sunrise/sunset times | Yes | — |
| Automatic daylight saving time | Yes | Yes |
| Cycling Features | ||
| Courses | Yes | — |
| Compatible with Varia™ lights | Yes | — |
| Compatible with Varia headlight camera | Yes | — |
| Speed and cadence sensor support (w/sensor) | Yes | — |
| Compatible with Varia™ radar (rear-facing radar) | Yes | — |
| Alerts (triggers alarm when you reach goals including time, distance, heart rate or calories) | Yes | Yes |
| Running Features | ||
| Run workouts | Yes | — |
| Running power | Yes | — |
| Race predictor | Yes | — |
| Foot pod capable | Yes | — |
| Running dynamics | Yes | — |
| Run/Walk/Stand detection | Yes | — |
| Stride length (real time) | Yes | — |
| PacePro™ Pacing Strategies | Yes | — |
| Vertical oscillation and ratio | Yes | — |
| Ground contact time and balance | yes (but not balance) | — |
| GPS-based distance, time and pace | Yes | yes (Connected GPS only) |
| Course- and weather-specific race predictor | Yes | — |
| Cadence (provides real-time number of steps per minute) | Yes | — |
| What You'll Love | ||
| Touchscreen | Yes | Yes |
| Display type | AMOLED (optional always-on mode) | Liquid Crystal |
| Water rating | 5 ATM | Swim, 5 ATM |
| Garmin Pay™ | Yes | — |
| Pulse Ox blood oxygen | yes (spot-check, during sleep, all day) | yes (spot-check and optionally in sleep) |
| Sleep score and insights | Yes | Yes |
| Battery life (smartwatch mode) | Up to 11 days | Up to 5 days |
| Activity Profiles | ||
| Gym | Strength, HIIT, Cardio, Elliptical Training, Stair Stepping, Floor Climbing | Strength, HIIT, Cardio, Elliptical Training, Stair Stepping, Indoor Rowing, Dance Fitness, Jump Roping |
| Swim | Pool Swimming, Open Water Swimming | Pool Swimming |
| Cycling | Biking, Indoor Biking | Biking |
| Wellness | Walking, Pilates, Yoga, Indoor Walking | Walking, Pilates, Yoga, Breathwork |
| Racket sports | Tennis, Pickleball, Padel | — |
| Indoor running | Treadmill Running, Indoor Track Running, Virtual Running | Treadmill Running |
| Outdoor running | Running, Outdoor Track Running, Trail Running, Ultra Running | Running |
| Outdoor recreation | Hiking | — |
| Swimming Features | ||
| Time and distance alerts | Yes | — |
| Auto rest (pool swim only) | Yes | — |
| Drill logging (pool swim only) | Yes | — |
| Countdown start (pool swim only) | Yes | — |
| Underwater wrist-based heart rate | Yes | — |
| "Repeat on" rest timer (pool swim only) | Yes | — |
| Basic rest timer (up from 0) (pool swim only) | Yes | — |
| Stroke type detection (freestyle, backstroke, breaststroke, butterfly) (pool swim only) | Yes | — |
| Pool swim metrics (lengths, distance, pace, stroke count, swim efficiency (SWOLF), calories) | Yes | — |
| Open-water swim metrics (distance, pace, stroke count/rate, stroke distance, swim efficiency (SWOLF), calories) | Yes | — |
| Outdoor Recreation | ||
| Auto rest | Yes | — |
| TracBack® | Yes | — |
| Back to start | Yes | — |
| Fish forecast | yes (via Connect IQ™) | — |
| UltraTrac mode | Yes | — |
| Area calculation | yes (via Connect IQ™) | — |
| Elevation profile | Yes | — |
| Total ascent/descent | Yes | — |
| Future elevation plot | Yes | — |
| Distance to destination | Yes | — |
| Sun and moon information | yes (via Connect IQ™) | — |
| Point-to-point navigation | Yes | — |
| Rest Timer (Ultra Run only) | Yes | — |
| Bread crumb trail in real time | Yes | — |
| Daily Smart Features | ||
| Calendar | Yes | Yes |
| Passcode | Yes | Yes |
| Connectivity | Bluetooth®, ANT+® | Bluetooth® |
| Garmin Share | Yes | — |
| Find My Phone | Yes | Yes |
| Find My Watch | Yes | Yes |
| Morning report | Yes | Yes |
| Red shift mode | Yes | — |
| Weather forecasts | Yes | Yes |
| Smart Notifications | Yes | Yes |
| Smartphone compatibility | iPhone®, Android™ | iPhone®, Android™ |
| Controls smartphone music | Yes | Yes |
| On-device Connect IQ™ Store | Yes | — |
| Find My Phone during GPS activity | Yes | — |
| Pairs with Garmin Connect™ Mobile | Yes | Yes |
| Compatible with Garmin Messenger app | Yes | — |
| Battery saver (customizable low power watch) | Yes | — |
| Realtime settings sync with Garmin Connect™ mobile | Yes | Yes |
| View images from notifications on watch (Android™ only) | Yes | — |
| Text response/reject phone call with text (Android™ only) | Yes | Yes |
| Connect IQ™ (downloadable watch faces, data fields and apps) | Yes | — |
| Connected GPS | — | Yes |
| Activity Tracking Features | ||
| TrueUp™ | Yes | Yes |
| Move IQ™ | Yes | Yes |
| Step counter | Yes | Yes |
| Floors climbed | Yes | — |
| Calories burned | Yes | Yes |
| Distance traveled | Yes | Yes |
| Intensity minutes | Yes | Yes |
| Automatic rep counting | Yes | Yes |
| Garmin Connect™ Challenges app | yes (optional Connect IQ app) | — |
| Move alerts (displays on device after a period of inactivity) | Yes | Yes |
| Auto goal (learns your activity level and assigns a daily step goal) | Yes | Yes |
| Move Alert movement options | — | Yes |
| Workout and Training Plans | ||
| HIIT workouts | Yes | — |
| Yoga workouts | Yes | — |
| Cardio workouts | Yes | — |
| Pilates workouts | Yes | — |
| Strength workouts | Yes | — |
| Garmin Running Coach | yes (no strength add-on) | — |
| Garmin Running Coach Experts | Yes | — |
| Garmin Coach - Prebuilt Cycling Plans | Yes | — |
| Daily Suggested Workout - Running (Pace and Heart Rate Based) | Yes | — |
| Health & Wellness Monitoring | ||
| Sleep | yes (advanced) | yes (advanced) |
| Hydration | yes (in Garmin Connect™ and optional Connect IQ™ widget) | Yes |
| Breathwork | Yes | Yes |
| Fitness age | Yes | yes (in app) |
| Nap detection | Yes | — |
| All-day stress | Yes | Yes |
| Women's health | yes (in Garmin Connect™ and optional Connect IQ™ widget) | Yes |
| Health snapshot | Yes | — |
| Respiration rate | Yes | Yes |
| Resting heart rate | Yes | Yes |
| Breathing variations | Yes | — |
| Relaxation reminders | Yes | Yes |
| Abnormal heart rate alerts | yes (high and low) | yes (high and low) |
| Relaxation breathing timer | Yes | Yes |
| Body Battery™ energy monitor | Yes | Yes |
| Wrist-based heart rate (constant, every second) | Yes | Yes |
| Safety and Tracking Features | ||
| Assistance | Yes | Yes |
| Live Event Sharing | Android™ Only | — |
| Incident Detection during select activities | Yes | Yes |
| Incident detection alert on phone for wearables | Yes | — |
| Kid Activity Tracking Features | ||
| Toe-to-Toe™ Challenges app | yes (optional Connect IQ Toe-to-Toe™ Challenges app) | — |
| Training, Planning and Analysis Features | ||
| % HRR | Yes | — |
| % HR max | Yes | Yes |
| HR zones | Yes | Yes |
| HR alerts | Yes | Yes |
| HRV status | Yes | — |
| Manual lap | Yes | — |
| Rest timer | Yes | — |
| Auto max HR | Yes | — |
| Finish time | Yes | — |
| HR calories | Yes | Yes |
| Voice alerts | Yes | — |
| Physio TrueUp | Yes | Yes |
| Recovery time | Yes | — |
| VO2 Max (Run) | Yes | Yes |
| Course guidance | Yes | — |
| Training effect | Yes | — |
| Advanced workouts | Yes | — |
| Interval training | Yes | — |
| Race glance/widget | Yes | — |
| VO2 Max (Trail Run) | Yes | — |
| GPS speed and distance | Yes | yes (Connected GPS only) |
| Configurable lap alerts | Yes | — |
| Customizable data pages | Yes | Yes |
| Touch and/or button lock | Yes | — |
| Activity history on watch | Yes | — |
| Downloadable training plans | Yes | — |
| Training effect (anaerobic) | Yes | — |
| HRM running pace and distance | Yes | — |
| Customizable activity profiles | Yes | Yes |
| Auto Pause® automatic timer halt | Yes | — |
| Respiration rate (during exercise) | Yoga and Breathwork only | Yoga and Breathwork only |
| Auto Lap® interval tracking feature | Yes | Yes |
| Primary benefit (Training Effect labels) | Yes | — |
| HR broadcast (broadcasts HR data over ANT+® to paired devices) | Yes | — |
| Custom alerts | — | Yes |
Wrist Fit
Garmin Forerunner® 165
Sits best on wrists ~45–61mm wide (≈ 12.0–16.3cm circumference).
Garmin Lily® 2
Sits best on wrists ~37–51mm wide (≈ 9.9–13.6cm circumference).
Frequently Asked Questions
Is the Garmin Forerunner® 165 bigger than the Garmin Lily® 2?
The Garmin Forerunner® 165 is bigger — 43mm vs 35.4mm case width.
Which fits a smaller wrist better, the Garmin Forerunner® 165 or the Garmin Lily® 2?
The Garmin Forerunner® 165 suits wrists around 45–61mm wide, and the Garmin Lily® 2 around 37–51mm. The one with the smaller lower bound is the safer pick for a small wrist.
Can I see the Garmin Forerunner® 165 and Garmin Lily® 2 side by side at true scale?
Yes — the schematics and photos above show both watches at matched scale, and our fit tool overlays each on your wrist width.