Smart watch true rate NFC three straps, sports bracelet

Applicable people: men, teenagers, couples, adults, the elderly
Operation mode: touch + button
Wristband material: metal
Strap style: chain
Compatible platform: iOS
Communication type: Bluetooth
Battery life: 7-14 days
Charging method: wireless charging
Waterproof level: daily waterproof
Screen type: TFT screen
Case material: titanium alloy