Battery Type : Lithium Metal Power Source : Rechargeable Battery Is Batteries Required : No Is Batteries Included : Yes Origin : Mainland China Item Type : Book Lights Intelligent digital display Adding intelligent digital display screens is a significant feature. It not only displays the remaining battery life, so you will never lose your guard, but also includes a half hour timer button that allows you to set precise reading intervals. Battery capacity (2200mAh) The upgraded model is equipped with a large capacity battery of 2200mAh, providing unprecedented power. Say goodbye to frequent charging, this power battery allows you to enjoy 120 hours of uninterrupted reading even on long flights or camping trips. Base material Aluminum Aluminum alloy body The aluminum alloy structure of Book Light not only exudes elegance, but also is durable. It can withstand daily use without showing signs of wear and tear, making it a reliable companion for enthusiastic readers. Upgrade silicone clip and flexible gooseneck The upgraded silicone clip ensures a secure grip on books, e-readers, or desks to prevent accidental sliding. The flexible gooseneck design provides the perfect angle for your lighting needs without disturbing others in the room. Blue light protection shading curtain This book lamp features a blue light protective cover. It can filter out harmful blue light emissions, reduce eye fatigue during late night reading, and ensure that your eyes remain comfortable and healthy. source Battery powered