Rainbuvvy L21 Plus Low Power Smart Phone Watch 1.81inch LCD BT5.0 Android Cheap Smart Bracelet Support Bluetooth Call and Music

Model name: L21 Plus G-sensor: yes OS: Support Android and IOS Bluetooth: BLE5.0+5.0 Dual-mode SIM: NO WIFI: NO NFC: No Bluetooth call: YES Power amplifier: yes Receiver: None, two in one with horn Horn: YES Side key: One button,（supporting knob） Microphone: YES USB: NO Motor: YES Temperature Sensor: no Bluetooth antenna: Solder wire Charging mode: 2 pin contact charging Product size: 38*44.5*12mm Languages: English, Chinese,Netherlands、Russian、French、German、Portuguese、Spanish、Turkish、Polish、Malaysia、Czech、Slovak 、Arabic、Italy、Thai

Functions:Three rings of health、Heart Rate/Blood Pressure/Oxygen 、BT call、BT Music、ECG monitoring、Sleep monitoring、call reminder、SMS Alerts、Social APP Message Reminder、Alarm clock reminder、A sedentary reminder、sport、Turn the wrist and shine the screen、Looking for bracelets、Looking for Phones、Remote Photography、Do Not Disturb、Dial customization、Flight mode, common contacts, Siri, music control, weather, etc

Heart Rate: yes Battery capacity: 180 m·Ah Display shape: Square Resolution: 240×284 Waterproof: no Operating system: IOS(9.0 and above) / Android(5.0 and above)