Garmin Forerunner® 101 vs Garmin Venu 4 - 45mmSize, Specs & Wrist Fit Compared
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Garmin
Forerunner® 101 (010-00329-05)
Garmin
Venu 4 - 45mm
On the wrist the Garmin Venu 4 - 45mm feels lighter (38g vs 74g, case only).
Specification Comparison
| Spec | GarminForerunner® 101 | GarminVenu 4 - 45mm |
|---|---|---|
| Case Width | — | 45mm |
| Thickness | — | 12mm |
| Weight | 74g | 38g |
| Shape | Circular | Circular |
| Water Resistance | — | 5 ATM |
| GPS | Yes | 19 hours |
| Battery Life | 14-15 hours, typical | 12 days |
| Display | — | 1.4 inches |
| Always-On Display | — | Yes |
| Released | 2003 | 2025 |
Full Specification Comparison
140 specs| Spec | Garmin Forerunner® 101 | Garmin Venu 4 - 45mm |
|---|---|---|
| Overview | ||
| Family | Garmin | — |
| General | ||
| Dimension | 3.26" x 1.71" x 0.91" (8.28 x 4.35 x 2.3 cm) | — |
| Battery Type | 2 AAA batteries (not included) | — |
| Battery life | 14-15 hours, typical | — |
| Display Size | 1.44" x 0.92" (3.65 x 2.34 cm) | — |
| Water rating | IPX7 | — |
| Display resolution | 100 x 64 pixels | — |
| Sensors | ||
| GPS | Yes | — |
| has GPS | — | Yes |
| has a compass | — | Yes |
| Has a barometer | — | Yes |
| has a gyroscope | — | Yes |
| Has a cadence sensor | — | No |
| has an accelerometer | — | Yes |
| Monitors perspiration | — | No |
| Has a heart rate monitor | — | Yes |
| Has a temperature sensor | — | Yes |
| Monitors blood oxygenation levels | — | Yes |
| Product Info | ||
| Main SKU | 010-00329-05 | — |
| Product ID | 231 | — |
| Product Name | Forerunner® 101 | — |
| Release Date | 3/2/2003 | — |
| Product Variation | Forerunner® 101 | — |
| Maps & Memory | ||
| History | 5000 laps | — |
| Navigation Routes | 0 | — |
| Waypoints/favorites/locations | 100 | — |
| Cycling Features | ||
| Alerts (triggers alarm when you reach goals including time, distance, heart rate or calories) | Yes | — |
| Training, Planning and Analysis Features | ||
| Virtual Partner | Yes | — |
| Interval training | Yes | — |
| Customizable data pages | Yes | — |
| Auto Pause® automatic timer halt | Yes | — |
| Auto Lap® interval tracking feature | Yes | — |
| Design | ||
| width | — | 45 |
| height | — | 45 |
| volume | — | 24.3 cm³ |
| weight | — | 38 g |
| thickness | — | 12 |
| ATM rating | — | 5 ATM |
| resolution | — | 454 x 454 px |
| screen size | — | 1.4 inches |
| Display type | — | OLED/AMOLED |
| Has a display | — | Yes |
| pixel density | — | 458 ppi |
| width of band | — | 22 mm |
| water resistance | — | Waterproof |
| Always-On Display | — | Yes |
| has a touch screen | — | Yes |
| is designed for kids | — | No |
| Gorilla Glass version | — | Gorilla Glass 3 |
| waterproof depth rating | — | 50 m |
| Watch band is replaceable | — | Yes |
| Has sapphire glass display | — | No |
| maximum operating temperature | — | 55 °C |
| has branded damage-resistant glass | — | Yes |
| lowest potential operating temperature | — | -20 °C |
| Battery | ||
| charge time | — | 1 hours |
| battery life | — | 12 days |
| has wireless charging | — | No |
| has a removable battery | — | No |
| battery life with GPS on | — | 19 hours |
| Has a solar power battery | — | No |
| has a rechargeable battery | — | Yes |
| battery life in power save mode | — | 25 hours |
| Features | ||
| release date | — | 2025-09-17 |
| Has a stopwatch | — | Yes |
| Has smart alarm | — | No |
| warranty period | — | 1 years |
| Has call control | — | Yes |
| Has silent alarm | — | Yes |
| has HRV tracking | — | Yes |
| internal storage | — | 8GB |
| measures VO2 max | — | Yes |
| Has notifications | — | Yes |
| Has ECG technology | — | Yes |
| Locates your phone | — | Yes |
| has a front camera | — | No |
| has fall detection | — | Yes |
| has voice commands | — | Yes |
| Acquires GPS faster | — | Yes |
| Has vibrating alerts | — | Yes |
| shows readiness level | — | Yes |
| Can be used to answer calls | — | Yes |
| measures resting heart rate | — | Yes |
| has irregular heart rate warnings | — | Yes |
| has fast/slow heart rate notifications | — | Yes |
| Has a built-in camera remote control function | — | No |
| Connectivity | ||
| has NFC | — | Yes |
| supports ANT+ | — | Yes |
| supports Wi-Fi | — | Yes |
| supports Galileo | — | Yes |
| has a cellular module | — | No |
| Is compatible with iOS | — | Yes |
| Is compatible with Android | — | Yes |
| Miscellaneous | ||
| has aptX | — | No |
| Has auto pause | — | Yes |
| Available on PC | — | Yes |
| Is compatible with Windows | — | Yes |
| Is compatible with Mac OS X | — | Yes |
| has an external memory slot | — | No |
| Compatible with smart scales | — | Yes |
| has a battery level indicator | — | Yes |
| Provides the sunrise/sunset time | — | Yes |
| has a socket for a 3.5 mm audio jack | — | No |
| Compatible with external heart rate monitors | — | Yes |
| App & Software | ||
| Ad-free | — | Yes |
| Free app | — | Yes |
| Tracks BMI | — | Yes |
| Has coaching | — | Yes |
| Includes maps | — | Yes |
| Supports routes | — | Yes |
| Has achievements | — | Yes |
| Has goal setting | — | Yes |
| Has live tracking | — | Yes |
| Has exercise diary | — | Yes |
| Predicts ovulation | — | Yes |
| Can be personalised | — | Yes |
| Has weight tracking | — | Yes |
| Predicts start date | — | Yes |
| Tracks water intake | — | Yes |
| Has inactivity alerts | — | Yes |
| Has period notifications | — | Yes |
| Has temperature tracking | — | Yes |
| Doesn’t require account | — | No |
| Provides activity reports | — | Yes |
| Displays fertile window notifications | — | Yes |
| Counts how many calories you've burned | — | Yes |
| Activity tracking | ||
| Measures pace | — | Yes |
| Tracks distance | — | Yes |
| Tracks elevation | — | Yes |
| Designed for golf | — | Yes |
| Tracks your sleep | — | Yes |
| Tracks steps taken | — | Yes |
| Designed for diving | — | No |
| Has a route tracker | — | Yes |
| Has exercise tagging | — | Yes |
| Has multi-sport mode | — | Yes |
| Tracks calorie intake | — | Yes |
| Provides sleep reports | — | Yes |
| Detects activities automatically | — | Yes |
| Has a stroke counter for swimming | — | Yes |
Wrist Fit
Garmin Venu 4 - 45mm
Sits best on wrists ~47–64mm wide (≈ 12.6–17.1cm circumference).
2D Dimension Schematics
Accurate scale drawings based on case dimensions. Drag to pan, Ctrl+scroll to zoom. Works for every watch regardless of photo availability.
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Frequently Asked Questions
Can I see the Garmin Forerunner® 101 and Garmin Venu 4 - 45mm 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.
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