Retro LED Night Light, Blowing Controlled USB Powered LED Lamp, Imitate Kerosene Oil Lamp Design with Dimmer Control Knob, Best Choice for Dinner, Reading, Bedroom, Camping Etc. (Green) 1.Blowing Control- A gentle blow into the lampshade can turn on/off the lamp. (Please switch it ON initially.) 2.Adjustable brightness- You can fuse the Dimmer Control Knob to adjust the brightness, just like the traditional Kerosene light. 3.Rechargeable battery built-in- Charging through USB cable. With DC 5V USB port, can be connected to computer, power bank or USB adaptor. 4.Retro Design- Innovative Kerosene design, three colors available. 5.LED light, energy saving, durable and environmental friendly