Electronic Amplifier Ear Muff

Dual purpose for work and pleasure.Natural sound impression by stereo to upgrade sound quality for FM radio effects. Independent FM and volume adjust knobs (88 MHz ~108 MHz).Very comfortable to wear,& easy portable. Cell life in inverse proportion to length of use and amplification results in noisy environment,service life of alkaline cell ranging about 70 ~ 72 hours. Easy cell replacement (1.5V x 2) simply by pening up the cell cabinet. SNR: 25 dB　NRR: 30 dB