I bought this in a thrift store for less than a dollar. I did not know what it was, but for a dollar I was very curious. So it is what it is and I do not need it, because I have hair like young Fabio, only it is grey.
     It came naked, with no charger, but I am a retired industrial electrician, so I fabbed a charger, (included). Within 20 minutes of charging (maybe sooner, I only waited 20m), I was able to use the device on my hair for many minutes at a time. It projects a red laser image on the wall as proof of power. The internal Li Batt exhibited what I consider a healthy profile during charge. I will guarantee the internal battery. The unit will work by just being plugged into the charger, after 20m. The literature says 30m of op between charges. You can easily get instructions online. Search Lux9 Hairmax. All I have to say is do not stare at the lasers.
    You will get the unit, a usb cable that fits the receptacle, and a standard, random, off-the-shelf usb charger, so that you will be able to hit the ground running on your hair restoration (even though the device will take many months to show effectiveness). You will not get the pictured gauge, showing o.38 amps. It took 4 hours to fully charge from dead.

Note, the OEM charger claims 6vDC. The USB charger included is only 5v. So it will probably take longer to charge than the product literature may claim. So what, it will take much longer for your hair to grow back. I refute any claim of hair growth. I merely claim that the product has been tested to perform as new.

This unit is used, (cuz I used it). Per instructions, I used it three times, eleven minutes at a time, within a week, all on my initial charge. Then I charged it to about 80% for storage.

This sucker is FDA approved. If I do not sell it, I will use it and maybe have even better hair than Fabio in his prime !!
I have no diseases, but the end piece is detachable, and I will sanitize it before shipment. No worries.