Small and light,the weight just 9 g,no need to plug in ear,more comfortable,Say goodbye to the swelling caused by earplugs.Using the power of Bluetooth 4.1 Technology,it can work with all smartphones,tablets,and music players.It can display the real-time power on IOS and some Android systems.you can switch freely between the left and right ears without any effect by the design of hanging on ear.Wearing thin glasses frames does not affect the wear.It can connect two mobile phones at the same time,the best design.The sound quality of calls and music becomes very clear.It will be more secure to get rid of in-ear design and keep track of changes in surroundinding environment.It is more suitable for answering phones in noisy environment.Welcome to inquiry.