Pentel B Lumish Static Electricity Remover LED Light - Blue Materials/Body:AcrylMetallic Parts:Steel, BrassWith Polysheath System: LED Light Destaticizing Method: Touch Electric Discharge TypeBattery Used: CR2016 (Two pieces) Initial illumination: 200 luxes from 10 cm away (When using a new unused battery) LED Light Color: WhiteLighting time: 10 hours of continuous use (over 10 luxes)