Ultra-low latency keeps synchronized with audio and video, convenient to keep in contact with your teammates all the time With 300mAh battery charging bin, it can provide long working time Music/Game dual modes, long press MFB button to switch Music to Game mode Bluetooth 5.3 connection, support most of Bluetooth-enabled devices and bringing lower power consumption Built-in powerful driver unit, it can deliver HiFi sound quality, let you listen to wonderful music Great for gaming, running, hiking, cycling, car driving, business occasion, etc, enjoy superb sound quality instantly Specification: Chipset: JL6973 Bluetooth version: 5.3 Material: ABS Supported protocols: A2DP, AVCTP, AVDTP, AVRCP, HFP, SPP Decoding format: AAC SBC Bluetooth transmission frequency: 2402-2480MHz Bluetooth range: 10m Battery capacity: charging bin: 300mAh; earphone: 30mAh*2 Working hours: 6 hours Standby time: up to approximately 85 hours Headphone driver unit: 8mm, 32Ω Frequency response range: 20-20KHz Charging port: Type-C Audio delay: low delay 45MS Audio delay: low delay 45MS Certification: CE/FCC/RoHS Button Usage: Power on: Press and hold the MFB button for 3 seconds Power off: Press and hold the MFB button for 5 seconds Reject incoming calls: Press and hold the MFB button for 2 seconds Turn on voice/Game Mode: Continuously touchthe MFB button on the left ear three times Pause/playingmusic, or answer/end calls. Double click on the MFB key Song selection the Up or down. long press the MFB button on the left and right ears for 2 seconds Up and down