Unilateral Hanging Ear Wireless Bluetooth-compatible V5.1 Headset Microphone Stereo Headphone With Sports Earphone Business Description: 1. Headphone parameters -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: φ8MM 32Ω 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 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 i