Foldable wireless bluetooth microphone headset stereo headset super headset Feature: Folding design, easy to carry 1 Shocking game sound quality effects make you feel more comfortable in the game experience. 1. Head-mounted Bluetooth headset, Bluetooth version 5.0, connection distance of about 10 meters 2. Automatic conversion of phone and music, up/down selection of music, play/pause 3. Listen to music with high stereo sound quality, powerful effect, clear calls 4. Large battery capacity, low power consumption, long battery life, rechargeable via USB, lithium battery, can be used repeatedly. 5. Support IOS system battery display, support stereo music playback, call 6. With surround sound, binaural microphone for calls, or reject calls anytime, anywhere 7. Wireless and wired switchable Specifications: Bluetooth version: V5.0 JL6936D4 Channel system: stereo (dual channel) Drive unit 40mm Support protocol: HFP, A2DP, AVCTP, AVRCP Standby time: 25H Talk time: 13H Music playing time: 12H Charging time: 1H Charging voltage: 5V 300MA Bluetooth working frequency: 2402MHZ-2480MHZ Ambient temperature: -40/+85℃ Transmission distance: 10M Battery capacity: 250mAh Speaker specifications Driver: 40MM Sensitivity: 122dB±3dB Impedance: 32Ω ±15% Frequency response: 20-20KHZ Package includes: 1x Bluetooth headset 1xUSB data cable