Working Voltage: 3.7V 

Output Power: MAX3W

Output impedance: 4~8Ω

Working current: 35MA

Recording current:40MA

SD capacity: MAX 32G

Recording time: according to SD card capacity  

 sampling rate: 24KHZ,  bit rate:  192KBPS

Built in 3.7V battery

Have one or two LED lights to come on while the unit is recording

Six buttons: Recording, Play/Pause, VOL+, VOL-,Next, Previous

Built in microphone

Built in 3W mono speaker

Button wire:65CM