SK-299 Large-Capacity Memory MP3 Voice Recorder MP3 Player Voice Recording For Meeting Class Electronics Supplies Features: 1.Built-in professional recording audio processing program, MP3 format recording, one button one function, simple and convenient operation 2.Large-capacity memory allows you to record easily; large-capacity battery to meet your recording time needs 3.Intelligent noise reduction, condenser microphone recording, restore the real sound. 4.Support recording function, convenient and practical 5.Support multiple formats of MP3WAV audio file playback, automatically shut down and save the recording when the battery is low 6.Drive-free U disk, USB2.0 universal interface, high-speed data transmission 7.Intelligent voice control recording, it coulde be effectively saving storage space and reducing useless files 8. Adopting high-definition broken code screen display, easy to operate at night and clearly visible. Specification: 1.Material: ABS 2.Color: Black 3.Size: 30x97x13mm 4.Recording distance: 10 meters 5.Recording time: 600 minutes 6.Recording format: MP3 7.Transmission interface: USB2.0 8.Power supply: 3.7V-4.2V 9.Battery capacity: 270mAh 10.Recording bit rate: 128Kbps 11.SN (Noise Ratio): more than or equal to 70dB 12.Power supply; rated voltage: .3.7V-4.2V 13.USB input rated voltagepower: 5V300MAH--5V500MAH 14.Distortion: 0.05% 15. Memory: 8GB Packing list Recording pen(not included TF Card) X1 earphone X1 charging cable X1 user manual X1