Specification:Condition: 100% Brand NewItem Type: Electronic Breast Massager Color: Black Voltage: 3.7V Battery: 650mahMaterial: NylonUpper Bra Size: Approx.39cm / 15.3in Lower Bra Size: Approx.32cm / 12.5in Suitable size of lower chest circumference:70-85cm / 27.5-33.4in Package Weight: Approx.330g Instructions:Fix the bra close to your chest, use it for 15-30 minutes a day, 1-3 times a day Lithium battery "+" corresponds to the button on the bra, "-" corresponds to the button on the bottom of the bra, otherwise it will not be powered Package List: 1 x Battery 1 x Bra 1 x USB Cable 1 x Bra ConnecterNote:1. In the process of use, goods such as quilts cannot be used to cover products to prevent local overheating.2. Do not sleep while using.3. If local red heat occurs after use, please stop observing for a few days. Do not use continuously.4. Drink plenty of water before and after use to help with detoxification..5. Direct plug is prohibited.6. Ban machine wash.7.;This product does not have buttons to adjust the mode, and there is no mode adjustment function. The white battery is only for power supply, without buttons and touch functions.