Logitech Headset...

Delivers a powerful sound and deep bass to enhance your music experienceMeticulously designed ear tips fit snugly without hurting the ear canalBluetooth connectivity lets you stream audio from Bluetooth-enabled devicesJBL Pure Bass sound For over 70 years, JBL has engineered the precise, impressive sound found in big venues around the world. These headphones reproduce that same JBL DNA, punching out bass that?s both deep and powerful.Up to 6-hour battery life Enjoy your music and take calls for up to 6 hours. Get a full recharge in 2 hours.

Bluetooth 5.1 technology ensures higher data transfer speed, stable and fast connection, and low power consumptionTrue wireless dual-ear design, left and right earphone channels are separated. It can be used solely or used in pairsTouch control design, no more physical buttons, no more pressure on your ears Easy to control music and calls, and activate voice assistantBuilt-in Mic on both earbuds with intelligent noise reduction delivers clearer and more real talking sound in stereo modeA 250mAh charging case can charge and store the earbuds 30mAh battery in each headphone ensures 5 hours of music playing time

Driver sensitivity range is about 1kHz/1mW (dB) with impedance 14 ohmsDynamic frequency response range is about 20Hz?20 kHzWith up to 25 hours 5 hours from the earbuds and 15 hours from the case of battery lifeBluetooth frequency range is up to 2.4-2.4835 GHzTransmitted modulations are GFSK, ?/4 DQPSK, 8DPSK and 55mAh 3.7V battery