Operator Headphones Head-mounted With Noise Canceling Microphone One-ear Telephone Clear Call Headphones Single-Sided Headset version: V5.1 chipset: AC6973D4 Operating range: 10m protocol HP,HFP,AVRCP ,A2DP Codec code: SBC,AAC Power capacity: 300mAh/3.7V Charging time: approx. 2 hours Standby time approx: 200 hours Headset size: 190*79*56mm Compatible devices: PC, laptop, smartphone Specifications: 1. Single-ear stereo: shocking bass, professional phone service headset, clear calls, value online 2. Active noise cancellation technology: active noise cancellation and technology allows you to fully immerse yourself in the music 3. Wide range arm bar: equipped with a wide range of 300 rotation of the arm bar 4. compatibility: Fully compatible with -enabled devices such as mobile phones, tablets and laptops Package Included: 1*Headset 1*Charging cable 1*Manual