Horn diameter: φ 50mm ;

Impedance: 16 Ω ± 15%;

Sensitivity: 113 ± 3dB;

Frequency range: 20HZ-20KHZ;

Mark style size: φ 4 * 1.5mm;

Sensitivity: -42 ± 3dB;

Impedance: 2.2K Ω;

Directionality: all- round;

Chip: Jerry 7018;

Headphone working current: 28MA;

Continuous working time of headphones: over 15H;

Headphone working distance: Accessible 10M;

Battery capacity: 1000MA;

Charging time: 2H;

Prevent overcharging: 4.2V;

Prevent over discharge: 3.0V;

Protection board, anti short circuit design;

Earphone size: 215mm * 92mm * 210mm;Attachment: Audio