This is a Lontor rechargeable LED camping lantern (model CTL-OL164).
It features a 2500mAh lead-acid battery.
The lantern provides reliable light for up to 10 hours on a single charge.
It can be charged via a 5-7V adapter or a compatible solar panel.
A USB output port allows for charging mobile phones and other devices.
Brightness can be adjusted using a rotary switch.