Most advanced V4.0 long range bluetooth headset in zipper package

Most advanced V4.0 long range bluetooth headset in zipper package     Specification:   

Headphone drive unit:	40mm
Speaker drive unit	44.5mm
Headphone Impedance:	30Ω
Speaker imdedance	4Ω
Headphone power	20MW
Speaker power	2.5W
Frequency Response :	20Hz-20KHz
Sensitivity:	110dB+/-3dB
Operating distance	10 meters
Bluetooth state	30hours
Play music in max volume	speaker for 8 hours
Battery capacity	1400mah

        Company information   Founded in 1998, Skyringe is a professional production of high-quality headphones factory in China. We specialized in headphonedesigning and various headset manufacturing. Our appeal and success rely on our 18 years experiences in headphone manufacturing, and provide superior quality and competitive price. We work all day to help our clients to find suitable products for their market.   We will pass the social responsibility and product quality control of SGS and ITS by the third party factory-auditing every year.
Being one of the authorized factories for Disney in China, we are also authorized manufacturer for more than 20 different brands in audio industry. Our customers, coming from over 20 countries of the world, have became our good friends and parterners   As the saying goes, "The reasonable customer is always right". We are determined to offer you excellent quality, favorable price and best service. You would have a pleasant experience with us!