The battery was dead, so I've replaced it with one I had on hand (it's a low-capacity one, so it's probably best used as a stationary device). When disassembling, the buttons are not fixed in place, so the buyer will need to secure them. Portable DAC, SEIUN PHA, compatible with DSD and Hi-Res Audio. - Model Name: SEIUN PHA - Supported Formats: DSD, Hi-Res Audio - Brand Name: CYBERDRIVE - Color: Silver Thank you for viewing.