Specifications: 1) Metallic jacket, 2) Mercury free green batteries, 3) Full size available, D, C, AA, AAA and 9V, 4) A variety of packages a) Shrink pack b) Blister card 5) High stability and reliability, 6) Perfect leakproof, 7) Long life, 8) OEM welcome, 9) Provides designing on customer special requirements,