| Introduction Time | 2014, September | May 31, 2021 |
|---|---|---|
| Availability Status | Available. Released July 2015 | Available, released June 1, 2021 |
| Size and Dimensions | 42 x 35.9 x 10.5 mm | 46 x 38.4 x 13 mm |
|---|---|---|
| Product Weight | 69g body weight | 43 gram (g) |
| Compatible SIM Card Types | No | eSIM |
|---|---|---|
| Other Body Features | IPX7 certified / Water resistant up to 1 meter for 30 minutes / 18-karat gold (yellow and rose gold versions), ceramic | Waterproof / Display with curved edges (2.5D) |
| Display Technology | ||
|---|---|---|
| Screen Size | 1.65 inch (~56.8% screen-to-body ratio) | 1.78 inch (~56.8% screen-to-body ratio) |
| Display Resolution | ||
| Multi-Touch Capability | Yes | - |
| Screen protector type | Sapphire protective glass | Corning Gorilla Glass |
| Display Technical Details | Display with 3D Touch / 450 nits display brightness | 450 nits brightness |
| OS Version | watchOS 1.0, upgradable to 4.0 | |
|---|---|---|
| Chip Model | Qualcomm Snapdragon Wear 4100 (12nm) |
| CPU | ||
|---|---|---|
| GPU Model | - |
| Internal Memory Capacity | 8GB, 512MB RAM | 8GB with 1GB RAM |
|---|
| Alert Type | Vibrate; Ringtones | - |
|---|---|---|
| Speaker Type | Yes | Yes |
| Battery Type and Capacity | Non-removable 250 mAh Li-Ion battery (0.94 Wh) | Non-removable 430 mAh Li-Ion battery |
|---|---|---|
| Battery Standby Time | Up to 18 hours (combined usage) | Up to 36 hours |
| Smart Sensors | Accelerometer, Gyroscope, Heart rate sensor | Accelerometer, Heart rate sensor with SpO2 (blood oxygen level calculation) capability, Gyroscope, Barometer, Compass |
|---|---|---|
| Messaging Method | SMS, Email, IM | - |
| Other Features and Capabilities | MP3 player / Photo viewer / Siri voice commands | Supports various sport modes, Watch face customization capability, Heart rate monitoring, Blood pressure measurement, Blood oxygen level measurement, Sleep monitoring, Breathing exercise program, Phone notification display, Alarm clock, Timer |
| Communication Technologies | No cellular connectivity |
|---|
| Wireless Network Type | ||
|---|---|---|
| Bluetooth Support | 4.2, A2DP | |
| GPS Support | No | Yes, with A-GPS, GLONASS, BDS, QZSS |
| NFC Support | Yes | Yes |
| USB Connections Type | No | No, charges via proprietary charging dock with USB Type-C port |
| Available Color Options | Black, Light Blue | |
|---|---|---|
| Global Price Range |
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