DOMINO MARVEL DM11 IP68 Waterproof Smart Watch Band Activity Tracker with Heart Rate Monitor for Kids Women Men - Black Keyboards Helmet Bluetooth Version Bluetooth V3

Helmet Bluetooth Version Bluetooth V3

strong stability

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7 momentary push buttons  (4 big buttons + 2 small buttons + joystick select button ) and a two-axis thumb joystick gives your Arduino functionality on the level of old Nintendo controllers

DOMINO MARVEL DM11 IP68 Waterproof Smart Watch Band Activity Tracker with Heart Rate Monitor for Kids Women Men - Black Keyboards Helmet Bluetooth Version Bluetooth V3Color Black Model DM11 Quantity 1 piece Material TPU CPU Processor NRF52832 Screen Size 0. 96 inch Screen Resolution 80*160 Touch Screen Type IPS Bluetooth Version Bluetooth V4. 0 Operating System Android 4. 4,Android 4. 4. 1,Android 4. 4. 2,iOS,Android 5. 1,Android 6. 0,Android 7. 0 Compatible OS Android 4. 4+ & IOS 9. 0+ Language English & Chinese Wristband Length 12. 5 cm Water proof IP68 Battery Mode Non removable Battery Type Li polymer battery