OVLENG V8-1 Over-Ear Stereo Bluetooth 4.0 + EDR Headband Wireless Foldable Headset Built-in Microphone Headphone for PC, Laptop, Mobile Phone it prevents the filling from

it prevents the filling from shifting time to time as well

from textbooks at school to office supplies at work and anything in between

length from base plate to unit: 68mm

Three adjustable backrest positions

the battery also features overcharging protection and a battery charge level indicator on the tank ensures that that power is always at its best with every use

OVLENG V8-1 Over-Ear Stereo Bluetooth 4.0 + EDR Headband Wireless Foldable Headset Built-in Microphone Headphone for PC, Laptop, Mobile Phone it prevents the filling fromUp to 10 hours of battery life 40mm drivers impedance: 32Ohm frequency response 20 20. 000Hz sensibility 106db+3db polymer Lithium battery you can control volume tracks and many more from the easy access sensibility buttons located in the front right of the headphones. Stereo headphone with quality HD sound & Built in HD microphone for hands free calling or voice recording, 6 8 hours Music playtime, 10 hours talking. You can enjoy music when you are