Specification: Item Type: Keychain Voice Recorder Material: ABS Recording Mode: Power On Recording, Power Off Saving Recording Format: WAV Playback Format: MP3 WMA WAV Built In Polymer Lithium Battery: 180mAh Size: Approx. 59x14x25.5mm / 2.3x0.6x1.0in Package List:1 x Keychain Voice Recorder 1 x Charging Cable1 x Earphone1 x Instruction Manual Note:Please allow some error due to manual measurement. About this item LOOP RECORDING: Voice recorder supports automatic split recording, loop overlay recording. 1536Kbit PCM recording, optional voice control recording 50DB. ONE TOUCH RECORDING: Mini voice recorder with time stamp, recording file name named after time. One touch recording with delete function, playback LED light indication. SUPER STANDBY 30 DAYS: Keychain voice activated recorder supports 20 hours of continuous recording, super standby for 30 days, store recording for more than 90 hours. POWER FAILURE SAVE: Keychain voice recorder supports MP3, WMA, WAV playback, support fast forward and backward playback, power off save. ABS MATERIAL: Voice activated recorder is made of ABS material, UV process, high concealability, classic style. Lanyard hole, can suspend wallet, keys, cell phones, backpacks. LOOP RECORDING: Voice recorder supports automatic split recording, loop overlay recording. 1536Kbit PCM recording, optional voice control recording 50DB. ONE TOUCH RECORDING: Mini voice recorder with time stamp, recording file name named after time. One touch recording with delete function, playback LED light indication. SUPER STANDBY 30 DAYS: Keychain voice activated recorder supports 20 hours of continuous recording, super standby for 30 days, store recording for more than 90 hours. POWER FAILURE SAVE: Keychain voice recorder supports MP3, WMA, WAV playback, support fast forward and backward playback, power off save. ABS MATERIAL: Voice activated recorder is made of ABS material, UV process, high concealability, classic style. Lanyard hole, can suspend wallet, keys, cell phones, backpacks.