... 18650 Li-ion, 3.7v&3000mAh per pc. 6. Color : black, silver, bronze (large can be customized) 7. Size : 310mm * 50mm ... batteries) 9. Appearance : Precision CNC machining, thickened anodized matte black.10. Lens material: imported high quality UCL double-coated lenses, highly transparent ...