Tech Classic Mini USB Led Bulb 4 Led Light

EASY TO USE : Powered by a variety of USB ports that use a DC 5V power supply, you can plug it into any USB power source, such as a mobile power source, laptop, PC or any other device with a USB output port. Small stature makes a big difference, illuminating the night to accompany you. Home and outdoor emergency lighting to illuminate every moment anytime, anywhere. Long life and energy saving.