Bluetooth Headphones, Wireless Neckband Headset Stereo Noise Cancellation With Retractable Earbuds For iPhone,Android,Other Bluetooth Devices

Why choose MKRSD bluetooth headphone?
1.HIFI sound:premium sound with deep bass and clear treble
2.Bluetooth V4.1 wireless audio transmission
3.IPX3 water- proof and sweat proof
4.Long battery duration-better battery efficiently with up to 15 hours of play/ call
5. 2 in 1 bluetooth connection:connect two devices simultaneously
6.control calls:hands free calling and easy controls for volume,skip,pause and play
7.flexible &lightweight: weight 1.9OZ in flexible and durable silicone neckband,comptible with Android,Apple,Windows
8.Warranty:one year manufacture warranty and 30 days replacement or money back guarantee
Specifications:
Bluetooth version: V4.1 Bluetooth IPX3 waterproof rating
Transmission Distance:10m(33 feet)
Battery:3.7V/185 mAh Li polymer
Charging port: Micro USB
charging time : Less than 2 hours
Playback time: up to 12 hours
Standby time :550 hours
headphone weight : 54g
Supported profiles:A2DP,AVRCP,HFP,HSP
Package includes
1 X V4.1 bluetooth headphones
1 X micro USB cable
3 X Earbuds size :S,M,L
1 X user manual