The working frequency is 902-928MHz

this meaningful piece of jewelry makes a unique keepsake and heartfelt gift

Product specifications:

Annotation Information: Date

Bluetooth Calling, Heart Rate Monitoring, Home Outdoor Smartwatch Music World The working frequency is 902-928MHzProduct information: System requirements: Android 4. 4 and above, IOS 8. 0 and above, support Bluetooth 5. 0 Bluetooth version: BLE 5. 0 Main control chip: Rene 8762DT Memory : Flash 64MB Screen resolution: 240*280 Battery capacity: 350 mA Standby time: 15 days or so Working time: 5 7 days or so Motor: Built in, vibration alert Features: 1. 85" IPS square screen with full viewing angle Easy to change the strap, standard 22mm Massive dial push, custom