①. Functions: 6 sets of themes, custom dial, support step counting, brightness adjustment, multi-sport mode, sleep detection, heart rate, blood pressure, blood oxygen, breathing training, information push, remote music, remote camera, voice assistant, real-time weather, find mobile phone (connected to mobile phone), alarm clock, timer, stopwatch, do not disturb mode, female menstrual cycle, Bluetooth call ②. App supports languages: Simplified, English, Traditional, Greek, French, German, Italian, Spanish, Dutch, Portuguese, Russian, Turkish, Japanese, Polish, Romanian, Thai, Vietnamese, Indonesian Chinese, Korean, Arabic ③. Languages supported by the device: Simplified, English, Traditional, Greek, French, German, Italian, Spanish, Portuguese, Russian, Turkish, Japanese, Korean, Polish, Thai, Vietnamese, Indonesian, Greek Hebrew, Malay ④. Instruction manual support language: Chinese, English ⑤. Compatible system: IOS 9.0 and above / Android 5.0 and above ⑥. APP: PGFit ⑦. Chip: Realtek: 8763EWE ⑧. Button type: 2 physical buttons ⑨. Heart rate sensor: LC11S ⑩. Bluetooth: 5.1 ⑪. Process: zinc alloy + ABS ⑫. Screen size: 1.39-inch TFT round screen ⑬. Screen resolution: 360x360 ⑭. Screen type: IPS full viewing angle color screen ⑮. Touch screen material: glass ⑯. Wristband Material: Silicone ⑰. Battery capacity: 340mAh ⑱. Battery life: 5-7 days for normal connection and 20-30 days for standby. (Connection usage depends on personal usage) ⑲. Charging method: Magnetic charging ⑳. Charging time: about 3 hours ㉑. Head size: 50.4x54.3x13.2mm, wrist strap length: 270mm ㉒. Net weight: 45 grams