Magic Drawing Pen

1:material: pen body aluminum alloy / paint, 75400-140 mah 5V/0.2A 0.52 watt-hours,2. charging port: micro charging port, do not change the pen head3. functions: general purpose, mobile phone, IPAD, educational tablet and other capacitive screen equipment4. pen head diameter 1.5mm * pen body diameter 8mm * total length 175mm/17g/69.6g5.size?210*60*21mm weight?74.8g