Weight and dimensions Charging case weight: 56.4 g Right earphone weight: 8.7 g Left earphone weight: 8.7 g Efficiency Wearing style: On-ear Headset type: Stereo Application: Calls/Music/Sports/Everyday Product color: Pink Product type: Headset IP protection class: IP54 Ports and interfaces Bluetooth: Yes Bluetooth profiles HFP A2DP AVRCP Wireless router range: 10 m Connection method: Wireless Bluetooth version: 5.2 Battery Battery capacity: 40 mAh Right earphone battery capacity: 40 mAh Battery charging time (charging case): 1 h Fast charging: Yes Left earphone battery capacity: 40 mAh Input voltage (charging case): 5 V Battery capacity (charging case): 600 mAh Microphone Microphone sensitivity: -38 dB Microphone type: Built-in microphone Safety warning Warnings Keep away from children. Do not use near sources of heat or fire. Check the condition of the batteries regularly to prevent leakage. Headphones Headphone sensitivity: 96.2 dB Frequency response: 50 - 16000 Hz Headphone construction: In-ear