DescriptionThis wireless audio receiver is made of premium material, which can withstand long-lasting use. Features the plastic material, which has high durability, not easy to deform. Fine workmanship, ensures practicality.Features-Color: Black -Material: plastic -Size: 6.00X3.00X1.00cm/2.36X1.18X0.39in Version: 5.0 Charging voltage: 5V Frequency: 2.402-2.480GHz Working hours: 10H Battery capacity: 300mAh Charging time: 2H Effective distance of wireless microphone: 0.5-2M Transmission distance: straight line 10M - Built-in intelligent noise reduction, eliminates echo and environmental noise during calls. - Support hand-free calls and voice signal processing, short press to answer/hang up the phone, enjoy superior sound. - Power saving function: automatic power off if not paired or idle for more than 5 minutes. - Tiny size, small and lightweight design. You can take this audio receiver wherever you go. - It is manufactured with professional technology to ensure the product can work for a long time.