Features:
1.CONVENIENT RETRACTABLE EARBUDS : Bluetooth Headsets with retractable wire management keeps you from mass, good for sports and outdoor, really set your hand free.
2.NOISE CANCELLING TECHNOLOGY: Featured with CVC6.0 noise cancelling technology, our headphone filters out background noise to guarantee high quality sound and provides you clearer voice for calls.
3.BLUETOOTH 4.1 TECHNOLOGY: Provides a several-second and stable paring with your bluetooth enabled device. Offering you impressive dynamic sound even you are 10 meters away from your device.
4.FLEXIBLE & LIGHTWEIGHT: weighs only 1.3 oz in flexible and durable silicone neckband, 50% lighter than any other neckband headset , you ll even forget you have them on!
5.ULTRA LONG WORKING TIME: Powerful rechargeable battery provides up to 13 hours of continuous talking/music time and 350 hours of standby with a single charge.

Specification:
Bluetooth chip: CSR BC8633
Bluetooth V4.1
Working Distance 10m (33 feet)
Battery capacity: Polymer lithium battery 120mAh
Charging Time 2 hours
Talk Time 8 hours
Music Time 5-8 hours
Standby Time 8 days

Packaging Accessories:
1 x Bluetooth Headphones
1 x USB charging cable
1 x User guide
3 x Ear tips(S, M, L)