Item Type: Book Light Product Size: Total Length: Approx. 345mm / 13.58in Built In Battery: Ternary polymer lithium battery 450mAh Light Source: Warm light and white light and Natural light(three colors can be switchable) Working Duration: About 5-15H(depending on brightness) Charging Time: 60 Minutes Material: ABS Function: Long press stepless dimming Charging Mode: USB micro 5V Color: Black Weight: 64 g / 2.3 oz(approx.) 18 LEDS: The book lamp adopts the most advanced SMD LED. The lighting area is 3 times that of ordinary LED lights 2EASY TO OPERATE: Click to switch the book light, long press for stepless dimming. Suitable for night reading, studying, knitting, etc. 3MULTIPLE CHARGING METHODS: Reading lamp with rechargeable 450mAh lithium ion battery, including USB micro cable, compatible with mobile phone charging head, computer, charging bank for charging 4PORTABLE AND EASY TO USE: Reading light is suitable for travel, small size and easy to carry, very convenient 5STABLE AND EYE PROTECTION: Book lamp with clip base design, easy to use, stable clip on the desktop or book, excellent LED wick, eye protection and soft light, protect eyesight 1 x Lamp 1 x USB Cable 1 x User Manual