XO BE37 wireless in-ear earphone with ultra long endurance with digital display

■New Bluetooth 5.0, Jerry 6976D Bluetooth solution■Bluetooth effective distance ≥ 10 meters■Maximum power of earphone 10mW■Audio signal-to-noise ratio: S/N ≥90dB■Frequency response: 50Hz～20KHz■Speaker unit: 13mm, 26R high-fidelity neodymium iron boron■Built-in battery: Lithium battery: Earphone: 3.7V / 35mAh Charging stand: 3.7V / 1200mAh■Music time: about 5 hours (80% volume)■Talk time: about 5 hours (80% volume)■Charging input standard:, DC5V, 500mA■Charging time: earphone: about 0.5 hour; Micro charging box: about 1 hour■Battery cycle life The capacity after charging and discharging cycles ≥300 times is 80% of the initial capacityChannel system: stereo■Bluetooth operating frequency: 2.402GHz-2.480GHz■Receiving sensitivity: -91 dBmActive and passive: active■Size: Charging box size: 75*55*30mmHeadphone size: 28*27.5*17.5mm■Weight: 87g■USB output 500mAh