Battery: china (or as customer request) battery life: 1-2 years Waterproof: not waterproof certificates: ce/ rohs/ reach Payment: t/t or western union packing: opp bag, gift box or as customer request Sample time: 15-30 days delivery: usually 20-60 days (depend on the order qty) Major market export: europe, america, middle east, asia, france, spain and so on. Remarks: 1¡¡éprint your logo on free and on your own style. 2¡¡éwelcome customized design. 3¡¡éhigh-quality products, best reasonable price and good service for you. 4¡¡éif you have any inquires or any questions, please feel free to contact us, we will reply to you in 24 hours. Pp bag