Product Description: Material: pen body aluminum (pure copper pen tip, pen tip with protective film does not hurt the screen) Effective distance: 1.6mm from the pen Working time: 8-10 hours Power Supply: USB charging Battery: Rechargeable Battery(Built in) Battery specifications: 0.518wh 3.7v 140mah Product color: Black, White Cap : round cover, conductive cloth head, silicone head Stylus Pen Size: pen nib 1.4mm x pen diameter 8.9mm x total length 170mm Product Feature: 100% brand new and high quality Charging time: 1 hour,Working time: 8-10 hours Compatible use: for Android phones, for phones, for Pro, all brands of flat-panel capacitive screen devices Press the button once, the LED blue light is on, you can use it; press the button again, turn off the light, the LED light goes out; the LED red light is on when charging, the light is off or The green light is on when the battery is fully charged Note: 1. Compatible with active capacitive pen, compatible with A + Android system, Android charging interface, one-piece metal pen tip can not be replaced, magnetic suction pen cap, without anti touch function. 2. Please do not use quick charger to charge this pen.