Features: Durable Shell: The shell of this product is made of metal and zinc alloy materials, with strong fall resistance Mini Portable: This mini voice recorder is lightweight and portable, handy and easy to fit in pocket or hand Convenient To Use: Time stamp, automatically name record files according to the date. Automatic adjustment of noise source.Recorder, MP3 player, USB flash drive Professional Chip: Adopt professional recording chip, the digital voice recorder has good recording quality with an authentic stereo experience. Noise Reduction: Advanced chip and noise reduction make you enjoy crystal HD sound recording and playback for class, lectures, meeting, speech, interviews, obtain evidence etc. Specification Types: 32GB, 64GB Material: Metal, zinc alloy Color: Silver, black Size(L x W x Thickness): About 70 x 23 x 8mm/2.76 x 0.91 x 0.31inch Record format :WAV / 192 KPBS Music playback format :WMA/WAV/MP3/OGG audio format Battery recording time: about 15 hours Battery standby time: about 10 hours Battery :150mAh rechargeable battery(built in) Charging time: about 2 hours SNR: 80 dB USB interface: USB 2.0 high speed Save time: About 188H/ 32GB save time: about 376H Operating temperature :-5 to 40 degrees Celsius Recording sampling rate :48KHZ Headphone jack: USB jack Compatible system: Windows 2000 or later Package included: 1pc x Voice Recorder 1pc x USB color 1pc x headphone adapter 1pc x headphone 2pcs x ring 1pc x user manual Note: Due to the light and screen difference, the item's color may be slightly different from the pictures. Please allow 0.5-2cm differences due to manual measurement.