NewProduct Hifi neckband sport stylewireless Bluetooth headphones Ver4.1 with Mic and waterproot IPx7.

　　Key Specifications/Special Features:

　　Brand name: Longtsin

　　Model number: LTS-103-SY750

　　Style: In-ear

　　Communication: Wireless and with extention wired

　　Connectors: USB

　　Application: Mobile phone, Tablet pc, Computer with BT.

　　Function: Bluetooth, microphone, noise cancelling

　　Place of origin: Guangdong, China (Mainland)

　　Color: Black, red, White

　　Customer OEM LOGO: Available

　　Operating range: about 10m

　　One USB cable

　　Impedance: 30Ω

　　Sensitivity: 108dB

　　Max. Input power: 18mW

　　Frequency response: 20Hz-20KHZ

　　Standby time: about 350hours

　　Microphone: Yes