3 COLORS+BRIGHTNESS STEPLESS DIMMING The head of each reading lamp has an independent switch,and 3 color temperatures (1600K to 5500K),and 0-100% stepless dimming brightness settings.Among them, there is the most popular amber light color: 1600K, Detachable LED Light & USB Extender Cable smart design,no need for charging cable,just Just unplug any of the reading lamp heads ,USB direct chargingOnly need one side of USB to charge, no need to unplug the two lamp heads. high-end design,aluminum alloy material,is the best gifts for book lovers. USB Rechargeable & 10 HOURS For Reading no flicker,blue light filter design,with 8 advanced LEDs lamp beads,maximum brightness 90 lumens.Includes the included 1100mAh rechargeable battery.Both children and adults no longer have eye fatigue. High Quality Design 1. Skin Friendly Silicone 2. Safety metal battery shell 3. Detachable led light head 4. 2 individual control center Suitable Size & Flexble Ergonomic neck around design and it is totally hands-free! Lightweight, Compact, Portable & Durable. the bendable book light doesn't require much space and can fit easily into your carry-on suitcase. Multi Applicable Scene This LED book light perfectly suitable for indoor or outdoor, book light for reading in bed at night, writing, mending, night jogging. Act as a flashlight or a reading lamp. Hands-free while doing anything.