1.635g, 18mm, and comfortable to touch 2. and portable design that can easily fit into a backpack and be carried with you 3.Sensitive on/off key, press and play 4.Long term companionship and casual painting 5.Can draw normally without the need for a power cord Voltage: 5V/50-60Hz Input voltage: 110-220V Wattage: 2W Battery: 2500nAh, working at maximum brightness for 7 hours Color temperature: 6500K Dimming mode: 5-stop dimming Illuminance: 400/790/1180/1560/1950 Current: 0.07/0.14/0.21/0.3/0.38 A Colour:black Material:ABS+PC+PMMA Package Contents: 1 x LED copy desk 1 x data cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.