Description: 1. Headphone parameters Bluetooth-compatible version: V5.1 EDR Wireless frequency: 2.4GHZ Support agreement: A2DP1.3/HFP1.6/HSP1.2/AVRCP1.6/D11.3 Transmission distance: 10 meters Battery capacity: 50mAh Charging voltage/current: 5V/1A Play/talk time: about 10 hours Charging time: about 1 hour Standby time: 120 hours Speaker impedance: 8MM 32 Microphone sensitivity: -42Db Working temperature: -10-50 Single earphone weight: 12.5G Single earphone box size: 125*74*18MM The weight of a single headset package: 42G 2. Parameters of charging compartment Input voltage/current: 5V/1A Battery capacity: 400mAh Complete set weight with charging compartment: 153g Net weight of earphone charging compartment: 78g Packing size with charging compartment: 150*81*28mm Specifications: Characteristics: 1.High Fidelity Sound This bluetooth headset is equipped with high-end CVC8.0chip, Intelligent noise reduction,ensures maximum signal quality, and guarantees excellent sound quality. 2.Portable storage box Easy to carry and very good for protection,Adopting exquisite energy gathering cabin design, built-in large-capacity lithium battery, escort your earphones 3.Ultralight and comfortable design Ergonomically-shaped in-ear buds and ear loops brings comfortable and no heavy feeling even after long time wearing, the 270 degree flip boom arm turns around the corner and fit this headset in right or left ear. 4.IPX7 waterproof IPX7 dust and water resistance. Splash and sweat are no longer a problem 5.LED digital display LED screen displays power, real-time power display 6. Faster connection When taking it out of the charging box, take out the headset, it will automatically turn on and pair with each other 7. Compat