The SPD:ONE series is a new type of digital percussion pad that anyone can easily incorporate into their performances. Operation is extremely simple, with only four knobs on the top panel to select sounds and control effects. Despite its compact size, it has a robust body, allowing for various playing styles, such as using sticks, hands, or feet. It also supports battery power, making it easy to integrate into your instrument setup. It's a great choice for drummers and percussionists, as well as guitarists, vocalists, DJs, and all kinds of musicians. ■ Number of recordable waves: 12 (excluding layers/click waves) ■ Memory: 4GB (approx. 360 minutes stereo / approx. 720 minutes mono) ■ Data format: WAV (44.1kHz, 16-bit, stereo/mono) ■ Controls: WAVE knob, [PHONES] knob, [MIX] knob, [MASTER] knob, [ALL SOUND OFF] button, [THRES] knob, [SENS] knob, [POWER] switch ■ Indicator: TRIG indicator ■ Connectors: MASTER OUT(STEREO) jack (standard type), PHONES jack (stereo standard type), USB port (USB micro B type), DC IN jack ■ USB: MIDI, file transfer (mass storage) ■ Power: Rechargeable nickel-metal hydride batteries (AA) x 4, alkaline batteries (AA) x 4, AC adapter (DC9V) ■ Current consumption: 300 mA (DC IN) Used a few times and stored. I think the condition is good. *Adapter not included