Lightweight bone conduction earphones for sports, with a battery life of approximately 6.5 hours. - Brand: AudioComm - Type: Bone conduction earphones - Bluetooth version: Bluetooth compatible - Operation buttons: Volume adjustment/play/pause button - Accessories: USB charging cable - Features: Lightweight design, for sports - Battery life: Approximately 6.5 hours Only the left side can be heard. The right side cannot be heard. Thank you for viewing. Please note that the box will not be sent to reduce shipping costs.