C21 1.32 inch HD Screen Smart Watch 1. Main control platform: 8762DK 2. Memory: 128M 3. Display: 1.32-inch high-definition square screen, 360*360 resolution 4. Bluetooth: BT3.0/ 5. 05. Communication system/data transmission: 8762DK+Jerry 6. Heart rate: HRS 36057. Pedometer: Silan Micro SC7A 208. Charging method: 2PIN magnetic wire 9. Battery: capacity 300mAH (polymer pure cobalt battery) 10. Waterproof grade: IP 6711. Compatible system: Android 6.0 and above; iOS 10.0 and above 12. Watch menu language: Simplified Chinese, Traditional Chinese, English, German, Russian, Spanish, Portuguese, French, Japanese, Arabic, Italian, Korean (factory default English) 13. FitCloud Pro APP language: Simplified Chinese, Traditional Chinese, English, German, Russian, Spanish, Portuguese, French, Japanese, Arabic, Italian, Korean, Ukrainian, Croatian, Hungarian, Hindi English, Turkish, Greek, Czech, Slovak, Polish, Persian, Thai, Swedish, Finnish, Dutch, Albanian (27 countries) 14. Functions: dialing, common s, call records, voice istants, data, exercise, exercise records, heart rate monitoring, sleep monitoring, blood pressure monitoring, blood oxygen monitoring, information, weather, female menstrual cycle reminders, music, stopwatch, timing device, alarm clock, find phone, settings, message, do not disturb mode, brightness adjustment, mute, language, pword, QR code, split screen, 19 sports modes, message and call reminder, WeChat sports, weather, etc. 15. Dimensions: 46.5x13mm 16. Strap: TPU strap, 22mm width, total strap length 264mm, adjustable area 160-250mm 17. Net weight: 51.3 grams