Razer Seiren Elite...

Legendary sound designed to never exceed 85dB making them safe for even the youngest music fansCustom designed ear cushions and headband with cool colorsHelp your kids stay connected to the world with the built-in micSoft padded headband and ear cushions give a feathery fit on small headsSoft ear cushions ensure comfort through prolonged hours of usage

Frequency Response Range: 20-20000 HzActive Noise-Cancellation: YesBuilt-in Microphone: YesBattery Capacity: 55 mAh

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.

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