Noise reduction smart screen headset,
solution: AD7003D8, wireless version: V5.4,
RF frequency: 2.402GHz-2.480GHz,
effective wireless distance: 10M,
speaker: 13mm,32+/-15%ohm;
Frequency response: 100Hz ~ 20KHz,
headphone battery: lithium polymer battery 3.7V/30mAh;
Music duration: about 4.5 hours (80% volume), about 16 hours with the charging case;
Call duration: approximately 3.7 hours (80% volume);
Charging bay battery: lithium polymer battery 3.7V/300mAh;
Standby time: earphone about 50 hours,
plus charging case standby about 190 hours,
charging time: 1.5H