Product specifications:

Product size: 175 x 152 x 44 mm;

Product weight: 45g;

Material: ABS + PC;

Lens material: polarized lens;

Music format: MP3, etc.;

Memory: 2Gb;

Working time: about 4 hours;

Bluetooth version: V2.1 + EDR;

The built-in lithium battery, lithium polymer battery 150 ma;

Audio output frequency: 20Hz~20KHz;

Signal-to-noise ratio: 90dB;

The maximum output voltage: 5V/DC 500mAh;

Working temperature: 0'C~60'C;

Distortion: 0.05%;

Headphone output power: 5mw;

Audio harmonic distortion is less than 0.1%.