• The simple three-button operation, readily control
• Master-slave switch, single and double-free switching
• Adopting a 180° rotatable design, the angle can be adjusted freely, both left and right ears can be worn
• 9D stereo sound, HD sound quality
• Intelligent noise reduction, HD calls
• Digital power display, the remaining power in the charging bay is clear at a glance
• Bluetooth 5.0 chip, high-speed transmission efficiency, ultra-low latency
• Ergonomic design, comfortable to wear, won't hurt your ears
• IPX5 sweatproof and waterproof

Specification:

• Chip: JL 6973D
• Model: YYK-520 2nd
• Bluetooth version: V5.1
• Support Bluetooth: A2DP/AVRCP/HFP/HSP/EDR
• Communication distance: ≥10m
• Frequency band: 2.402GHz-2.480GHz
• Speaker impedance: 13Ω±10%
• Standby time: 100 hours
• Talk/music playback time: about 7 hours
• Headphone battery capacity: 60mAh
• Charging case battery capacity: 500mAh
• Headphone charging time: about 1.0 hours
• Charging time of charging case: about 1.0 hours
• Built-in battery: lithium battery
• Charging voltage/current: 5V/1A