ITEM NAME:Wireless Business Headset Handsfree Stereo Headphones In Ear Earpiece Description Specification: Brand new bluetooth Version: V4.0 Transmission Range: 10 meters Profile Support: HSP / HFP / A2DP / AVRCP Standby Time: 200 hours Call Time: 7 hours Play Music Time: 6 hours Charging Time: 1.5 hours Frequency Range: 2.402G-2.480G Ambient Temperature: -20 / + 60 C Driver: 11.5 mm Impedance: 16 15% Frequency Response: 20-20000HZ Sensitivity: 112dB 3 dB Feature: Adopt top CVC6.0 strong noise cancellation technology. High-fidelity stereo, deep bass effect. High capacity, long standby time. Support voice report number. Support voice reminder. Ergonomically designed, comfortable to wear. Waterproof and sweatproof. Fine workmanship and good performance. Small size, light in weight. Convenient to carry. Long service life. Package included: 1 x Wireless Wireless Headphone 1 x Charging Cable 2 x Ear Ring 1 x User Manual Note: Please allow 1-5mm size errors due to manual measurement. Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same..1 x Wireless Wireless Headphone. 2 x Ear Ring. High-fidelity stereo, deep bass effect. 1 x Charging Cable. Profile Support: HSP / HFP / A2DP / AVRCP. Support voice report number. Support voice reminder.