Model Name: G40 4G GPS Watch

Bluetooth Version: BLE4.0/5.0 optional

Waterproof: IP66

Screen Size: 1.0 inch, 128*96 TFT

Watch OS: ThreadX

APP OX: Android 4.4/iOS 7.0 and above system

App plateform: Web or moble App

Chipset: UIS8910FF

WiFi: Yes but only for scan wifi hotdot

GPS: GPS only; BDS only, GPS+BDS;GPS+GLONASS

GPS/GSM Antenna: LDS

Frequency Band: GSM-900/1800,4G FDD-B3/B7/B8, 4G-TDD-B38/B39/B40/B41

SIM Card: Nano, compatible with e-sim

Charge: Magnetic 2 pin

Battery: 650mAh 4.35V Lithium pollymer battery

Function: Date, Step,Heart rate, Blood pressure, SpO2, GPS position, Two-way call, SOS alarm, Geo-fence, Low battery alarm, OTA