Model:B6439RD15332FG531 Recording mode: record on, save off Charging time: approx. 1 hour Recording time: approx. 25 hours Playback format: MP3/MAV/MWA 4G memory: up to 48 hours storage 8G memory: up to 96 hours 16G memory: up to 196 hours 32G memory: up to 384 hours Weight: approx. 50g [Superior Recording Quality] - The recorder records at 192kbps, captures 20~50 feet, and captures well in the wind. Featuring a dynamic noise reduction system, you can ensure you enjoy crystal clear audio with this digital recorder.[LONG TIME RECORDING] - Our audio recorder has built-in high-quality rechargeable battery that supports 20 hours of continuous recording and 15 hours of continuous playback time, now you don't have to worry about meetings or lectures anymore.[Easy to use and unique design] - The mini recorder has only 3 buttons, easy to operate, turn on the "ON" button, you are recording, turn off the switch when you are done, then plug in your headphones to enjoy the recording. Our recorder has a unique and stylish design , can be used as a keychain, compact body, you can carry it with you.[COMPATABLE WITH MAC AND PC] - Compatible with Mac or PC, forget about old bulky software, this digital voice recorder can easily transfer files to Mac or PC.