invisible bluetooth earpiece

The smaller size makes it more invisible (compared with ME05 which is known as 205, 305). At the moment, it is the smallest electronic earpiece. And it has louder, clearer sound and longer working distance than ME05. Battery life is up to 12 hours. When the battery is low, the earpiece will make a long beep sound. Even you don’t hear the beep sound, if the sound volume is low, you also need to change the battery. There is only one color as you can see in the pictures, please