Amazfit Bip 6 / Apple Watch Ultra (49 mm, 1st generation)

Amazfit Bip 6: Single case size: 1.97-inch AMOLED, 46.3 × 40.2 mm; Black, Charcoal, Stone and Red colours. There is no cellular (LTE) version; the larger Bip Max is a separate model.

Apple Watch Ultra (49 mm, 1st generation): Apple Watch Ultra, 49 mm natural titanium case, GPS + Cellular. The Apple Watch Ultra 2 and Ultra 3 are separate models.

Specification	Amazfit Bip 6	Apple Watch Ultra (49 mm, 1st generation)
Release year	2025	2022
Display	1.97-inch AMOLED, 390 × 450 pixels, 302 ppi; up to 2000 nits peak brightness; tempered glass with anti-fingerprint coating 2000 nits is the peak only, used briefly to improve readability in sunlight. Amazfit	LTPO2 OLED always-on Retina; 410 × 502 pixels; 1185 mm² display area; up to 2000 nits LTPO lets the refresh rate drop very low, so the screen can stay on without draining the battery. 2000 nits was twice as bright as any earlier Apple Watch display. Apple
Case and strap	46.3 × 40.2 × 10.45 mm; aluminium-alloy frame, fibre-reinforced polymer case; 22 mm liquid-silicone strap for 130–195 mm wrists, classic pin buckle; 2 buttons The standard 22 mm strap width lets third-party straps be fitted. Amazfit	—
Weight	27.9 g (without strap) Amazfit	61.3 g (without band) Apple
Water resistance	5 ATM According to Amazfit the watch withstands the pressure of 50 metres of still water for up to 10 minutes; there are pool and open-water swimming modes. Amazfit	—
Battery	340 mAh; 14 days typical use, 6 days heavy use, 26 days in battery saver mode, 32 hours of continuous GPS A full charge takes 1.5–2.5 hours. The box includes a magnetic charging head but no USB-C cable; any USB-C cable can be used. Amazfit	Up to 36 hours; up to 18 hours with LTE; USB-C magnetic fast-charging cable Runtime depends on display, workout and cellular use; using LTE away from the phone drains the battery noticeably faster. Apple
Sensors	BioTracker PPG biometric sensor (5 photodiodes + 2 LEDs); accelerometer, gyroscope, ambient light, magnetometer The PPG sensor tracks blood flow under the skin with light to measure heart rate, blood-oxygen saturation and heart-rate variability during sleep. These readings are not for medical diagnosis. Amazfit	—
Positioning	5 satellite systems; built-in GPS Built-in GPS lets runs and rides be recorded without the phone; turn-by-turn direction prompts are supported. Amazfit	—
Connectivity and calls	Bluetooth 5.2 (BLE); microphone and speaker; Bluetooth calling, notifications and quick reply Calls go through the phone over Bluetooth; the watch has no cellular link or Wi-Fi. Third-party music apps cannot be installed, but music playing on the phone can be controlled. Amazfit	—
Sports and health	140+ sports modes; automatic recognition of 25 strength exercises and 7 sports movements; 24-hour heart rate, blood-oxygen and stress monitoring; sleep stages and sleep breathing quality; Readiness score, PAI Chest-strap heart-rate monitors, running and cycling power meters and cycling speed/cadence sensors can be paired. Data can be exported to apps such as Strava, komoot, Google Fit and Apple Health; there is no sync with Samsung Health or MyFitnessPal. Amazfit	—
Compatibility	Android 7.0 and later, iOS 14.0 and later; Zepp app The Zepp Flow voice assistant works only in selected countries and regions. Amazfit	iPhone 8 or later with iOS 16 or later The watch can only be set up and used with an iPhone; it does not pair with Android phones. Apple
Case and glass	—	49 mm natural titanium case; flat sapphire front crystal; ceramic and sapphire back The flat front crystal is protected by a raised titanium edge. Apple
Chip	—	S8 SiP with 64-bit dual-core processor; W3 wireless chip; U1 Ultra Wideband chip; 32 GB storage Availability of Ultra Wideband features varies by country. Apple
Location and navigation	—	Dual-frequency GPS (L1 and L5), GLONASS, Galileo, QZSS, BeiDou; compass; always-on altimeter The L5 signal helps separate signals reflected by tall buildings and trees; Apple called it the most accurate GPS of any Apple Watch at the time. Apple
Health sensors	—	Electrical heart sensor (ECG); third-generation optical heart sensor; blood oxygen sensor Availability of the ECG and blood oxygen apps varies by country. Apple
Diving and water	—	WR100 (ISO 22810); dive-ready to 40 metres (EN 13319); water temperature sensor and depth gauge; IP6X dust Apple points to the third-party Oceanic+ app for recreational scuba diving to 40 metres; the watch itself is not certified as a dive computer. Apple
Safety	—	86-decibel emergency siren; Fall and Crash Detection (high-g accelerometer up to 256 g); Emergency SOS The siren plays two distinct patterns, one signalling distress and one mimicking SOS. Apple
Connectivity	—	LTE and UMTS; Wi-Fi 802.11b/g/n 2.4 and 5 GHz; Bluetooth 5.3 With cellular, the watch can make calls and get messages without the phone nearby; carrier support is required. Apple
Low-power setting	—	Up to 60 hours Apple announced that this setting would arrive in software after launch, in autumn 2022; it extends runtime by taking some readings less often. Apple
Operating temperature	—	−20 °C to 55 °C on the wrist Apple