RB-700HB headphones white

RB-700HB headphones Pure and clear voice once. A good percentage of sound insulation. Control songs and calls. Foldable and expand by head size. Battery capacity 300 mA The setup mode is 50 hours. Plutoth mode 5.0 very low energy consumption. Bluetooth is up to 10 meters. Listen to music 10 hours straight. A good percentage of sound insulation.