Bluetooth 5.0 wireless technology, stable and continuous connection 40mm large dynamic coil unit, powerful bass effect Large-capacity battery, standby time up to 80 hours Lightweight high-quality PU sponge earmuffs, comfortable to wear Independent button design, one-handed operation All-inclusive earmuffs, good sound insulation Support card, wired and wireless modeBluetooth version: V5.0 Bluetooth frequency: 2400MHZ-2500MHZ Impedance: -32ohm Rechargeable battery capacity: 200mAh Play time: 3-4 hours Talk time: 3-4 hours Standby time: 80 hours Charging time: 2-3 hours Power input: 5V-1A Material: ABS + PC Sensitivity:122dB Frequency Response Range:8-24000Hz Support Memory Card:Yes Fm radio mode