Bluetooth Headset with Microphone On Ear Wireless Noise Canceling Headphone for PC Laptop Skype Feature: 1. It can realize stable and fast signal transmission and be paired with two Bluetooth devices freely at the same time. 2. Using artificial intelligence noise reduction technology, the headphone reduce background 96% noise during calls. 3. Lightweight headphones with adjustable headband, suitable for any head shape. 4. The wireless headset can talk continuously for up to 18 hours after a full charge, and can make or receive hands‑free calls at any time. 5. Soft ear cushions and non‑slip pads can be firmly fixed in place, allowing you to be comfortable throughout the . Specification: Item Type: Bluetooth Headset with Microphone (Built-in Lithium Battery) Material: ABS Application: Ideal for PC/Computer/Laptop/Skype Chat/Business/Call Center/ Conference Call/Dictation/Dragon Talk/Online Courses/Web Seminars, etc. Bluetooth Version: AB5616A-V5.0 Class2 Frequency Range: 2.4GHz-2.480 GHz Transmission Distance: 10m (Due to Environmental Factors and the Transmission Distance of Mobile Bluetooth Devices is Different) Working Time: 18 Hours Standby Time: 380 Hours Support Protocol: HFPV1.6, HsSPV1.2, A2DPV1.2, AVRCPV1.4 Charging Interface: Type-C USB Interface Built-in Lithium Battery: Rechargeable Lithium Battery (3.7V, 150mAh) Charging Power Supply: 5VDC, 100-240V AC Adapter Rated Power: 5MW Channel: Mono Signal To Noise Ratio: ≥50DB Frequency Response Range: 50Hz-18kHz Distortion Degree: ≤1% Speaker Unit: 30mm Outer Diameter Microphone: Single Point Anti-noise Impedance: 2.2kΩ Sensitivity: 42±2dB Package List: 1 x Headset 1 x Manual 1 x Data Cable How to use:Connect to Bluetooth to use.