| Type | Li-Ion 250 mAh (0.94 Wh), non-removable |
| Charging | Wireless charging |
| Dimensions | 42 x 35.9 x 10.5 mm (1.65 x 1.41 x 0.41 in) |
| Weight | 50 g body (2.82 oz) |
| Build | Glass front (Sapphire crystal), ceramic/sapphire crystal back, stainless steel frame |
| SIM | No |
| Other | IPX7 water resistant up to 1 meter and 30 minutes |
| WLAN | Wi-Fi 802.11 b/g/n |
| Bluetooth | 4.0, LE |
| GPS | No |
| NFC | Yes |
| Radio | No |
| USB | No |
| Type | Retina OLED, 450 nits (peak) |
| Size | 1.65 inches |
| Resolution | 390 x 312 pixels (~303 ppi density) |
| Protection | Sapphire crystal glass |
| Other | 3D Touch display |
| Sensors | Accelerometer, gyro, heart rate |
| Other | Natural language commands and dictation |
| Announced | 2014, September. Released 2015, April |
| Status | Discontinued |
| Quad | 8 MP, f/2.4, 32mm (standard), 1.12µm, AF |
| Features | HDR |
| Video | 1080p@30fps |
| Card slot | No |
| Internal | 8GB 512MB RAM |
| Other | NVMe |
| Colors | Stainless Steel/Red, White, Brown/Black/Blue/Marine Blue Buckle, Blue/Stone/White/Storm Gray Leather Loop, Silver/Space Black Milanese Loop, Link Bracelet, Space Black Stainless Steel/Black, Black Link Bracelet, Pearl Woven Nylon |
| Models | A1554 |
| SAR EU | 0.42 W/kg (body) |
| Price | About 700 EUR |
| Technology | No cellular connectivity |
| 2G bands | N/A, |
| 3G bands | HSDPA 850 / 900 / 1700 / 1900 / 2100 ,CDMA2000 1xEV-DO , |
| 4G bands | 1, 2, 3, 4, 5, 7, 8, 13, 17, 18, 19, 20, 25, 26, 28, 29, 38, 39, 40, 41 - A1490, |
| 5G bands | 1, 2, 3, 5, 7, 8, 12, 20, 25, 28, 38, 40, 41, 66, 71, 77, 78, 79, 260, 261 Sub6/mmWave - A2176,1, 2, 3, 5, 7, 8, 12, 20, 25, 28, 38, 40, 41, 66, 77, 78, 79 Sub6 - A2398, A2399, A2400, |
| Speed | HSPA 42.2/5.76 Mbps, LTE-A Cat4 150/50 Mbps, EV-DO Rev.A 3.1 Mbps |
| OS | watchOS 1.0, upgradable to 4.3.2 |
| Chipset | Apple S1 (28 nm) |
| CPU | 520 MHz Cortex-A7 |
| GPU | PowerVR SGX543 |
| Dual | 1.2 MP, f/2.2, 31mm (standard) |
| Features | HDR |
| Video | 720p@30fps |
| Loudspeaker | Yes |
| 3.5mm jack | No |
| Performance |
Basemark OS II 2.0: 2195 |
| Display |
Contrast ratio: 1481 (nominal), 3.783 (sunlight) |
| Camera |
Photo / Video |
| Loudspeaker |
Voice 66dB / Noise 64dB / Ring 65dB |
| Battery life |
Endurance rating 62h |