Amazfit Bip 6 / Apple Watch Ultra 2

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 2: Apple Watch Ultra 2, 49 mm titanium case, GPS + Cellular; natural (2023) and black titanium added in 2024. Band options (Alpine Loop, Trail Loop, Ocean Band, Titanium Milanese Loop) vary by size. The Apple Watch Ultra (2022) and Ultra 3 (2025) are separate models.

Specification	Amazfit Bip 6	Apple Watch Ultra 2
Release year	2025	2023
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	Always-On Retina LTPO2 OLED; 410 × 502 pixels, 326 ppi; 1,185 mm² display area Brightness goes up to 3,000 nits and down to 1 nit in the dark. LTPO2 lowers the refresh rate to reduce battery use in always-on mode. 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	—
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	—
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	Electrical heart sensor; third-generation optical heart sensor; temperature sensor; depth gauge; water temperature sensor; compass; always-on altimeter The electrical sensor runs the ECG app (age 22 and over). The temperature sensor is not for medical use; it supports retrospective ovulation estimates in cycle tracking. Apple
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 Xs or later, or iPhone SE (2nd generation or later), with iOS 18 or later The watch is set up and used only with an iPhone; it does not work with Android phones. Apple
Case	—	49 mm, Grade 5 titanium; natural or black; 49 × 44 × 12 mm Weight is 61.4 g in natural and 61.8 g in black. Fits 130–210 mm wrists. Apple
Glass	—	Flat sapphire crystal front Apple
Chip and storage	—	S9 SiP (64-bit dual-core processor, 4-core Neural Engine); 64 GB The S9 SiP can process Siri requests on the device and supports the double tap gesture (tapping thumb and index finger together twice). Apple
Location	—	L1 + L5 dual-frequency GPS; GLONASS, Galileo, QZSS, BeiDou The L5 band helps reduce position errors where signals bounce, such as among tall buildings and dense trees. Apple
Diving and durability	—	100 m water resistance under ISO 22810:2010 (WR100); recreational scuba diving to 40 m under EN13319; IP6X under IEC 60529; MIL-STD 810H testing The depth gauge is accurate to ±1 m; Apple advises against diving below 40 m. The MIL-STD 810H tests cover altitude, temperature shock, freeze/thaw, shock and vibration. Apple
Cellular and wireless	—	4G LTE and UMTS; Wi-Fi 4 (802.11n); Bluetooth 5.3; second-generation Ultra Wideband chip Cellular use needs a carrier plan. Ultra Wideband enables precision finding of an iPhone; availability depends on the country. Apple
Battery and charging	—	Up to 36 hours in normal use and 72 hours in Low Power Mode; fast charge to 80% in about 1 hour; built-in lithium-ion The box includes a 1 m magnetic fast charger to USB-C cable; no adapter. Apple
Controls and safety	—	Customisable Action button; Digital Crown with haptic feedback; siren; Emergency SOS, fall and crash detection The Action button is also used for Precision Start, beginning a workout recording at the exact start. The siren sounds a loud alert to call for help. Apple
Operating conditions	—	On wrist –20 to 55 °C; diving 0–40 °C; altitude –500 to 9,000 m Apple