We are Shenzhen Bettermore Technology Co., Ltd based in shenzhen, China. We are member of TradeKey.com since January, 2014. Our business is related to Health & Medicines industry and we specifically deal in e cigarette. Please find our product details below:vision spinner battery1). Clearly marked voltage setting2). 3.3V to 4.8V twist to change voltage3). Short Circuit protection4). 5 Click on off button5). Works with 510 and EGO gear.6). Vision Battery 1300mahThank you for taking time to go through our business profile. If there are any questions, inquiries or comments, please feel free to contact us.