Features: brand new and high quality Small Enough: Wear it for a day without getting tired, light per ear, in-ear design, no weight-bearing feeling. Safe in-ear Style: The size can used according to different needs to ensure that different groups of people wear them. It's very comfortable, even if you wear it all day long, you won'for t feel discomfort. The perfect Gift: Packed in a charming box, it is a great gift for friends, family, children, and colleagues . Active Noise Cancellation: Isolate the sound and listen to it, using a dedicated noise reduction chip, through receiving and analyzing the additional noise, the opposite signal is generated in the earphone to cancel it. Shocking Sound Quality Experience: Feel the shocking sound quality experience, can analyze the audio excellently, and present the original sound. Specifications: Chip: CSR BT version V4.1 Transmission distance: 10M Transmission frequency: 2.4GHz Charging voltage: DC5V Charging time: less than 2 hours Talk time: about 5 hours Music time: about 5 hours Standby time: more than 70 hours Battery capacity: 70mAH Material: ABS Color: Black, Blue, Red, White Product Dimension: approx. 5.6x2.6x4cm/2.20x1.02x1.57inches Net Weight: 106g/0.23lbs Note: Please allow 1-2cm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1PC Wireless Single Ear Lavalier Headset