Product Name : Battery Case;Material : Plastic, MetalBody Size : 7.8 x 4 x 2.6cm / 3.1 inch x 1.6 inch x 1 inch (L*W*H);Pin Number( Each ) : 4Battery Type : 2 x 3.7V 18650This battery box holder with pin connector, fit for 2 x 3.7V 18650 batteries.With weld leg design, you can easily to put the battery in it.Battery is not included here.Color: BlackNet Weight: 72g/setPackage Content: 10 x Battery Case HolderOnly the above package content, other products are not included.Note: Light shooting 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.