Model Name    H66
Bluetooth version    BLE4.0
Waterproof    IP66
Screen Size    1.0 inch
Screen type    TFT
Display resolution    128x64 pixels
watch OS    NUCLEUS
APP OS    Android 4.4 / iOS 7.0 and above system
Chipset    MTK2503
WiFi chip    MTK 5931
GPS antenna    LDS
GSM antenna    LDS
heartrate sensor    PAH8002
3D accelerator    DA213
Frequency band    850/900/1800/1900mHz
SIM card    nano, compatible with e-sim
Charge port    Magnetic 2 pin
Button    one SOS key,  one reset key (on the back)
Dimension    55x32x14.8mm
Available color    Black, White (for bulk order of min. 3k only)
Type of battery    Lithium pollymer battery
Battery Capacty    600 mAh
Very frequent use    2~3 days
Normal use    About 4 days
Standby time    About 5 days
Functions    Today's Date, Steps Counting, Heart Rate/Blood Pressure Monitor, GPS Positioning, 2-Way Call, SOS Alarm, etc.
App platforms    Web or mobile App
Alarm message    Low battery, SOS, gen-fence
Watch data    Just display, no store
Server data    Save data for past 30 days 
Watch Case    PC+ABS
Button    Sillcon
Strap    18mm Sport Strap(Sillcon)
Strap buckle    316L Stainless steel
Dial size:    31.8 x 58 x 14.7mm
Product weight    40g
Package weight    120g
Package size (L x W x H)    90*76*71mm
Package contents    1 x H66 GPS Smart Watch, 1 x User Manual (English), 1 x Screwdriver, 1 x Pin, 1 x EU/UK adaptor, 1 x Gift Box