LEMFO LF37 2.1 inch BT Call Smart Watch, Support Blood Oxygen Heart Rate Female Menstrual Hardware Parameters: 1. Main chip: 8763EWE-VP 2. Memory: 128MB 3. Screen: 2.1 inch TFT; Resolution: 320 x 390 4. Touch: Capacitor full touch 5. Bluetooth-compatible: BLE 5.2 6. Heart Rate Sensor: HX3918 7. Battery: 820mAh 8. Charging Type: Magnetic sear charger 9. Waterproof: IP68 10. Size: 49.5 x 46 x 13.6mm System Parameters: 1. Android System: Support Android 5.0 and above 2. iOS System: Support iOS 10.0 and above 3. Function: Support sleep monitoring, timer, dind phone, coming callSMS reminder, notification push, hear rate monitoring, blood oxygen detection, Respiratory training, female menstrual cycle, remote music control, watch faces, push watch face, DIY watch face, remote upgrade, Data sync, BT call, time sync, alarm, weather, gesture wakeup 4. APP Support Language: English, Simplified Chinese, traditional Chinese, German, French, Arabic, Czech, Greek, Spanish, Japanese, Persian, Italian, Korean, Dutch, Polish, Portuguese, Russian, Finnish, Swedish, Thai, Hungarian, Slovak, Croatian, Albanian, Turkish, Ukrainian, Hindi, Vietnamese 5. Watch Language: English, German, French, Italian, Spanish, Japanese, Polish, Russian, Portuguese, Vietnamese, Arabic, Hebrew, Thai, Croatian, Turkish, Czech, Dutch, Indonesian, Malaysian, Finnish, Greek, Romanian, Hindi, Persian, factory default English 6. Multiple Sports: Walking, running, mountaineering, cycling, rope skipping, basketball, badminton, football, yoga (as push) Packing List: 1. Watch x 1 2. Magnetic base charger x 1 3. Manual x 1