Features: YYK525 wireless bluetooth-compatible headset, suitable for car driving, sports running, etc., for type-c charging port mobile phones. Using the latest wireless BT 5.1 technology, the pairing connection is fast and stable, there is almost no delay in call, and the game is not stuck, and experiencing the immersive fun. Built-in advanced φ8mm 32Ω noise-cancelling microphone provides you with crystal-clear sound. Headphone for head adopts a rotating design, the earplugs rotate 180 degrees, and can be worn on both left and right ears. The soft ear hooks perfectly fit the ears and can be worn for a long for time. Fast charging, it takes about 60 minutes to fully charge, low power consumption, long standby for time of up to 120 hours. Specifications: Headphone Parameters: Model: YYK-525 Bluetooth-compatible version: V5.1+EDR Wireless frequency: 2.4GHZ Support protocol: A2DP1.3/HFP1.6/HSP1.2/AVRCP1.6/D11.3 Transmission distance: 10 meters /32 ft Battery capacity: 120mAh Charging voltage/current: 5V/1A for Play/talk time: about 10-12 hours Charging time: about 1 hour Standby time: 120 hours Speaker impedance: φ8mm 32Ω Microphone sensitivity: -42dB Working temperature: -10-50℃ Parameters of Charging Compartment: Input voltage/current: 5V/1A Battery capacity: 500mAh Material: PC+ABS Packing Size: Approx. 150x80x28 mm/5.90x3.14x1.10 inch Type: only earphone, earphone kit(optional) Package Includes: Package 1 Includes: 1x Earphone Package 2 Includes: 1x Earphone 1x Charging Compartment 1x Charging Cable 1x User Manual note: Simple version and high-end version, 2 kinds of packages are avaliable, please choose according to you need. Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.