【Rechargeable Battery & 4 LED Bulks】 The neck light built-in rechargeable battery, 1.5 hours fully charged the LED neck reading light. It enables you to enjoy wireless 10-50 hours use time (Varies with brightness and usage), charged by USB charger, notebook PC USB,phone adapter, Car usb.Besides,there are 2 LED lamp beads on each arm ,more wide lighting eara to help you focus on what you are doing without worrying about the light.
【3 Light Modes & Step Brightness Dimming】The reading light for books has soft light and bright light, not only 3 temperature light Mode Adjustable, warm white(3000K), nature white(4500K) and cool white(6500K) but also through an independent switch for step dimming brightness levels dimmable to control the both heads toghter. You can set a comfortable lighting as you want for reading, knitting, camping, or repairing etc.
【 Portable Reading Light with Flexible Arms】The book light for reading in bed covered with premium comfortable soft rubber , sweatproof & wearability bendable and strong, it can be twisted, folded into any shape, simple to create the perfect illumination in different environments. Only 0.22Ib weight, can easily fit your carry-on suitcase or pocket , take it to anywhere portabely.