Wireless headset for calls, Bluetooth V5.3 compatible, equipped with a 165mAh battery. I opened it and used it once, but it didn't fit my head size, so I'm selling it. Please check the condition and included accessories in the photos. Operation has been confirmed. - Model: G2 - Bluetooth Version: V5.3 - Battery Capacity: 165mAh - Charging Method: Type-C - Weight: 91.5g - Purpose: For calls only Thank you for viewing.