this speaker equipped a V4.2 chip that can provide better connection and stable signal transmission. patented transparent design with magnet at the bottom. Specifications Interface Type:USB Cabinet Material:Plastic Use:Mobile Phone Bluetooth version:V4.2 Features:anti-scratch Type:HiFi TWS HIFI speaker Material:ABS+metal Display Screen:No Channel:2 Compatible:Universal Feature:Bluetooth transparent body with magnet What's in the box 2 x Speaker 1 x Charging Cable 1 x User Manual