Features: 1.Brand new and high quality2.With 4GB or 8GB memory 3. Built-in Lithium battery， rechargeable4.Compact design， easy to carry， adjustable wristband to easily wear on wrist 5.Built-in Microphone， Support MP3 playing 6.Long time voice recording (about 20 hours) 7.Use anytime and anywhere��training classroom recording， conference， interview， concerts， etcSpecification: 1.Recording Source: Built-in Microphone 2.Power Supply: Lithium Battery 3.Capacity: 4GB/8GB4.USB Version: USB2.0 5.Continuous Recording Time: 20 Hours 6.Charge time��about 1 hour7.Voice Controlled Recording: YES 8.Recording Format: WAV 9.Support music format��MP3/WAV/WMA10.Default Recording Quality��192kbps11.Shell Material: Plastic Notes��The color of this product will be send randomly��Package Included: 1 x Voice Recorder Bracelet 1 x 3.5mm Jack Female Cables1 x USB Cable 1 x Earphone 1 x English Manual