Mint condition product and packaging, like new.

Used for fewer than 10 charge cycles. Battery life is indistinguishable from a brand-new unit.

Very high quality DAC and headphone amplifier with a tiny form factor. Plenty of power. For such a micro unit, it has a very surprising amount of grunt for driving earbuds or headphones. 

Connecting via LDAC Bluetooth to an Android phone gives stunning results. Wide range of alternative codecs for connecting to any Bluetooth audio. Used as a wired DAC dongle it is a massive audio upgrade for any PC.

Color IPS display
3.5 + 4.4mm outputs
Wired and wireless charging

I found it to have a very detailed, neutral and pleasing sound signature. The tiny form factor is so practical for travel. This example has had very little usage and has been a storage for a while.

This unit features the dual ES9219C DACs and the flagship THX AAA-28 amplifier circuitry, providing desktop-level performance in a pocketable size.