KINGWorld Wireless Earbuds V4.1 In-Ear Sport Bluetooth Headphones Headset for iPhone Samsung Galaxy and Android Phones;

Service and support:
1 Year Worry-Free Warranty. 24-hours email contact service is available.
The wireless portable hand-free Bluetooth headset is with three different sizes of ear-buds, so you can choose the right one that fits your ear better. With no wires, there's nothing holding you back from completing your daily routine with this headset!
Description:
Offering up to 5 hours of glorious listening and a hands-free, wireless design, the 4.1 Bluetooth Headphones connect to your devices up to 33ft(10Meters) away without losing an ounce of sound clarity. Whether you're in the gym, doing yoga, or just love listing to podcasts at work,this headsets are sure to be the best gift you've ever given yourself or friends.
Two powerful audio drivers on each side offering balanced audio and crystal clear sounds, providing a comfortable and dynamic listening experience. Designed to sound good with any genre of music, be it from pop to hip hop to country.
Product specification:
Bluetooth version: 4.1
Bluetooth chip: CSR
Battery type: Rechargeable lithium-ion polymer battery
Charging method: DC5V 150mA
Transmission distance: 10m(33ft)
Talk time: ≥6 hours
Music time: about 5 hours
Standby time: ≥160 hours
Charging time: about 2 hours
Warning:
Please do not expose the headphones under direct sunlight while charging, especially when environment temperature is high.
Please avoid water damage. If it happens, do not use any more.
Please do not clean the Headset with chemical solvent.
Please do not disassemble,repair or alter the Headset.
How to connect:
1 Press and hold the MFB until the indicator light flashes red and blue alternatively,then the headset enters the pairing mode.
2 Turn on Bluetooth on your mobile phone ,find the Model" X21",and connect.You will hear "Connected".