Weight and dimensions Product weight: 30.3 g Efficiency Product color: Black Wearing style: On-ear Control Type: Buttons Volume control: Button Headset type: Stereo Application: Sports Product type: Headset IP protection class: IP55 Packaging data Packaging type: Box Package contents Suitcase: Yes Ports and interfaces Bluetooth profiles HFP AVRCP A2DP Connection method: Wireless Bluetooth: Yes Bluetooth version: 5.3 Wireless router range: 10 m Battery Music playback time: 12 h Charging time: 1 hour Battery capacity: 150 mAh Standby time: 240 h Input voltage (headphones): 5 V Microphone Microphone type: Built-in microphone Microphone sensitivity: -38 dB Safety warning Warnings Keep away from children. Check the condition of the batteries regularly to prevent leakage. Do not use near heat or fire sources. Headphones Frequency response: 20 - 20000 Hz Headphone construction: In-ear Headphone sensitivity: 96 dB