Specification:Brand: BaseusRange: DC 5VBattery capacity:145mAhBluetooth version: 5.0Bluetooth frequency: 2.4GhzFrequency response: 50Hz-20KHzCharging port: supports Micro DC 5V/100mA Lnput voltageOutput interface: 3.5mm stereo plugMusic playbackduration: ≦10 hoursUSB cable length: 50cmMIC sensitivity: -42 dbSNR (Signal to noise ratio): 75 dbFeatures:●Bluetooth 5.0 delivers greater efficiency, and safe navigation is latency-free.●One-click hands-free call free at ease ever after.●Avoids the danger of one-handed driving and phone answering with one hand.●Lossless sound quality CD-grade experience.●High resolution restores lossless sound quality bringing you with CD-grade music experience.●Turn wired to wireless more convenient for enjoying music.●Wired speakers are turned into Bluetooth speakers breaking free from.●As light as 12.3g, headphones are also supported.●Wired earphone can also be turned into Bluetooth earphones, which are simpler without wires and the weight can be ignore when you wear the earphone of 12.3g.●One full charge lasts for 10 hours: built-in rechargeable lithium battery, one full charge lasts for 10 hours. It can be used while charging when the power is low, convenient and economical.●10-M transmission distance enjoy freedom as you desired: no disconnection in 10-meter long distance, you can even enjoy music at the corner, and enjoy freedom as you wish.●Operate simply and connected automatically for the second time: turn on the Bluetooth of mobile phone to