Cycliq developed this to combine a rear light and camera so you can stay visible and record any trouble while cycling. The unit is easily rechargeable with USB-C while on your bike.

The specific model/generation is "CE601". The Velcro mounting strap is included.

I switched to a different accessory as my long rides started outlasting this device. Cycliq say it should work just fine if you add the right memory card, but I suggest using it for shorter rides. If you commute and charge at work, this could be a great deal for you.