Note: Please contact our customer service for more information. App: Wearfit Pro Product parameters (HW22) *. Size: 44 * 38.4 * 11mm *. Screen size: 1.75 inches *. Resolution: 320 * 385 *. Chip: HS6621 *. Heart sensor: SC7R30 *. Memory: 64m. *. BT5.2. *. Battery capacity: 200mAh *. Charging mode: magnetic charging *. Battery life: about 10 days *. Standby time: 65 days *. Touch mode: full touch *. Application: wear wear *. System requirements: Android 5.0 + / IOS 10.0 + Hardware information: (HW22PLUS) * Chipset: MTK2502C. * Application: RD is suitable * Compatible system: Android 5.0 and above; IOS 9.0. Above * FLASH. Memory: 128MB. * Screen size: 1.75 inches * Solution: IPS 320 * 385 * Touch Type: Top Touch Screen * BT: BT3.0 / 4.0 * G-Sensor: SC7A20 * Type: lithium polymer battery * Capacity: 3.7V / 200mAh * Charging method: wireless charging Language UI Language: Chinese (Simplified / Traditional), English, Arabic, French, German, Spanish, Portuguese, Russian, Thailand, Polish, Italian, Japan, Czech Republic, Turkish, Greek, Latin, Romanian, Vietnamese, Danish. App Language: Chinese (Simplified / Traditional), English, French, German, Japanese, Spanish, Italian, Korean, Russian, Thailand, Czech, Portuguese, Indonesia, Arabic, Turkish, Greek, Estonia, Bulgaria, Latvia, Lithuanian, Romanian, Serbia, Slovakia. Function 1. Pay attention to your health: Sleep tracker, sedentary reminder, heart rate / blood pressure / blood oxygen monitoring. 2. Good helper exercise: Stepler, combustion, distance, and motion mode. 3. Good helper for daily life: When connecting to mobile phone: Synchronous notification (incoming call reminder, message, etc. ), Bluetooth music, etc. Screen application, 3D dynamic dial, weather, lifting wake wakes wick, alarm, stopwatch, find my device, calculator, etc.