Weight and dimensions Product weight: 60 g Product width: 64.5 mm Product depth: 52 mm Product height: 31 mm Efficiency Master/Slave Function: Yes Product color: Black Wearing style: In-ear Application: Calls/Music Product type: Headset Apple Siri compatibility: Yes Active noise cancellation: Yes Package contents Charging case: Yes Quantity: 1 Ports and interfaces Bluetooth: Yes Bluetooth version: 5.4 Connection method: Wireless Battery Left earphone battery capacity: 40 mAh Supported battery type: Built-in Battery capacity (charging case): 400 mAh Right earphone battery capacity: 40 mAh Talk time: 7 h Working time (With ANC): 6 h Microphone Microphone type: Built-in microphone Safety warning Warnings Check the condition of the batteries regularly to prevent leakage. Keep away from children. Do not use near sources of heat or fire. Headphones Headphone construction: In-ear