SRS-XB23 Extra Bass...

Lenovo half in-ear earphone features high-grade cable, remote control and dynamic drivers maintain great musicality and comfortFinely engineered dedicated dynamic drivers handle treble, mids and bass and produces Energetic, rhythmic, and Hi-Fi soundFurnished with top-class ear case and superior cables ensure priceless comfort and lasts longer than a usual earphoneExperience the crystal-clear sound output regulation, brought you by the built-in brand new remote control, thanks to the unrivalled mic for noise-free calling

Type-C jack is compatible with smartphones, tablets and laptops that have Type-C audio interface.In-line control function, enables you to control music and calls.Built-in highly sensitive microphone allows you to have a clear phone call.Made of soft and skin-friendly silicone earplugs for a comfortable feel.

Has engineered the precise, impressive sound found in big venues around the worldHeadphones reproduce that same sound, punching out bass that?s both deep and powerfulStream your favourite tunes in super high quality thanks to Bluetooth 5.0Built-in battery provides 16 hours of playing time, that can be quickly recharged in 2 hours with the type C cable15-minute recharge gets you 1 hour of playback

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