Be able to connect 3 bluetooth devicesTouchpad with left/right buttonsYichip bluetooth chipWith 30mAh lithium batteryContinuous working 200 hours, standby 150 days Magnetic on/off buttonKeys: 64Scissors keys, comfortable typeKey switch lifetime: 5 millionMaterial: ABS + metalColor: Black/Silver,full blackSize: 319*160*18mmNet Weight: 1600gCompatible with IOS, Android, WindowsAccessories: charging cable, manual