Purchased new from Amazon in February 2021. Used in the workplace for about 6 months, but haven't used it in a while, so I'm selling it. Wireless connection using a receiver, not Bluetooth. 8-button for index finger use. - Brand: ELECOM - Model number: DEFT M-DT2DRBK - Power: 1 AA battery ・Operation confirmed. ・Everything in the photos is included. ・Will be shipped in simple packaging. ・Please understand that this is a used item.