Parameter functions: painting, writing, note-taking, touch Charging time: 1 hour Working time: 8-10 hours Compatible applications: for Android phones, apple phones, flat panel capacitive screen devices of various brandsEffective distance: 1.6mm from the pen Standard accessories: USB MICRO charger Battery Specification: 0.518wh 3.7V 140mAh Size: diameter pen ? 1.45MM x pen ? 9mm x total length 175mm
