What makes Wingbosom Electric Breast Massager so special? Promotes breast fullness Prevents chest sagging Activates the mammary glands Anti-sagging and durable. Eliminates waste and toxins from the mammary glands Ensures a healthy environment for the breasts Suitable for all sizes Specification: Product Name: Gfouk Wingbosom Electric Breast Massager Item Type:Breast Massager Material: silicone. Battery type: lithium battery. Battery capacity: 100 mAh, supplied with built-in battery Power supply type: USB data line Package includes: 1 pair x Gfouk Wingbosom electric breast massager. 1 x USB data cable. How to use: 1. Place the Wingbosom electric breast massager from Gfouk in your bra. 2. Adjust it to the correct position and adjustment. 3. Enjoy massages anytime and anywhere.