Features: Converts cassettes to MP3 files without a computer or additional software Makes high-quality 128 Kbps recordings Auto and Manual recording modes AUX line in port lets you convert audio from other sources (radio, CD player, etc.) Operates on 2 AA batteries or plugs into a USB port 8GB USB flash drive is about 2,000 songs Note: Non-Encrypted USB Flash Drive (FAT32 Formatted, Max.64GB) | Not for SSD or HDDSPECIFICATIONS Converter format MP3 Power supply 2X AA batteries or USB port Format of USB flash Support FAT, FAT32, exFAT Working time 2 hours with 2X AA batteries Audio channel Stereo L/R Bit Rate 128 Kbps Dimensions 4.4? L x 3.2? W x 1.25? H Weight 0.4 lbs. (without batteries)Includes: Cassette Player Headphones USB Cable User Manual Receive bag 3.5mm Audio cable