| Introduction Time | 2014, September | April 30, 2021 |
|---|---|---|
| Availability Status | Available. Released May 2015 | Available, released May 20, 2021 |
| Size and Dimensions | 38.6 x 33.3 x 10.5 mm | 35.7 x 25.8 x 12.2 mm |
|---|---|---|
| Product Weight | 40g (body) | 38 gram (g) |
| Compatible SIM Card Types | No | No |
|---|---|---|
| Other Body Features | IPX7 certified / Water resistant up to 1 meter for 30 minutes / Stainless steel and ceramic | IP68 certified for water and dust resistance (up to 1.5 meters) |
| Display Technology | ||
|---|---|---|
| Screen Size | 1.5 inch (~55.1% screen-to-body ratio) | 1.4 inch |
| Display Resolution | ||
| Multi-Touch Capability | Yes | - |
| Screen protector type | Sapphire protective glass | - |
| Display Technical Details | Display with 3D Touch / 450 nits display brightness | 600 nits peak brightness |
| OS Version | watchOS 1.0, upgradable to 4.0 | Proprietary OS compatible with Android and iOS |
|---|---|---|
| Chip Model | - |
| CPU | - | |
|---|---|---|
| GPU Model | - |
| Internal Memory Capacity | 8GB, 512MB RAM | - |
|---|
| Alert Type | Vibrate; Ringtones | - |
|---|---|---|
| Speaker Type | Yes | No |
| Battery Type and Capacity | Non-removable 205 mAh Li-Ion battery (0.78 Wh) | Non-removable 315 mAh Li-Ion battery |
|---|---|---|
| Battery Standby Time | Up to 18 hours (combined usage) |
| Smart Sensors | Accelerometer, Gyroscope, Heart rate sensor | Accelerometer sensor, Optical heart rate sensor with SpO2 (blood oxygen level) calculation capability |
|---|---|---|
| Messaging Method | SMS, Email, IM | Received notification alerts / Display text messages |
| Other Features and Capabilities | MP3 player / Photo viewer / Siri voice commands | - |
| Communication Technologies | No cellular connectivity | No cellular connectivity |
|---|
| Wireless Network Type | No | |
|---|---|---|
| Bluetooth Support | 5.0, A2DP, LE | |
| GPS Support | No | No |
| NFC Support | Yes | No |
| USB Connections Type | No | No, charges via proprietary charging dock |
| Available Color Options | Black | |
|---|---|---|
| Global Price Range |
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