Using skin-friendly foam pad and flexible headband, it is comfortable for you to wear. It adopts advanced Bluetooth-compatible chip, which ensures fast speed and stable connection. With noise reduction mic, it has HD-compatible calls. It is made of ABS professional impedance material, which can absorb and reflect sound waves, so as to reduce sound distortion and ensure clear communication even in noisy environment. The headband is slender and retractable, and the headset is looser. The charging cable length is 100cm. The outer diameter of the earphone shell is 82mm, the outer diameter of the head bow is 173mm, and the diameter from the top of the earphone head bow to the earphone shell is 180mm. It is perfect for driver, call center, for Skype chat, teleconference, webinar presentation, etc. It can connect two Bluetooth-compatible devices at the same time, and you can easily switch the use of headphones from one device to another. The microphone can be rotated 270 degrees, which means you can place it on either side of your head. Item Name: Wireless Headset Material: ABS Speaker Type: 40mm/20mW/32 Ω Built-in Battery Model: 602030 Earphone Battery Capacity: 300mAh (Included) Sensitivity: 108dB±3dB Endurance: About 100 Hours Talk Time: 30 Hours Charging Time: About 3 Hours, DC5V1A, Type-C Fast Charging Frequency Response Range: 20-20KHz Bluetooth-compatible Version: 5.0, Compatible with Bluetooth-compatible 4.2, BR/EDR Bluetooth-compatible Distance: 30m Bluetooth-compatible Pairing Name: Wireless Headset Charging Cable: 100cm Long, Black Round Cable, USB-Type-C Microphone Type: Strong Resistance, High Sensitivity 3012-M4618L15, Impedance: 2.2KΩ Compatible Protocol: A2DP/ AVRCP/HSP/HFP Compatible System: for iOS/for Android/for Mac OS/for Windows Features: Noise Reduction, Comfortable, Long Endurance Size Details: Earphone Shell Outer Diameter: 8.2cm/3.23" (Approx.) Head Bow Outer Diameter: 17.3cm/6.81" (Approx.) Top of Head Bow to Earphone Shell Diameter: 18cm/7.09" (Approx.) Charging Cable Length: 100cm/39.37" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Wireless Headset 1 x Charging Cable 1 x User Manual Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Dadangjia