◆. ABS body, transparent strong PC lamp shield. ◆. 3 super bright LED lights (45,000MCD). ◆. Built-in rechargeable lithium battery LIR2032 - 3.6V 40mAh. ◆. Under normal wear&tear,Lithium Rechargeable 500 times minimum. ◆. Wind up 1 minute can support light for 30 minutes. ◆. Winp up 2-3 min will support mobile phone talking for up to 8 min. ◆. Size:13.85*5.9*5.2cm ◆. Weight:175g