Tenergy T1000 Dimmable EYE-CARE Rechargeable LED Desk Lamp (White) Anti-glare design provides eye protection Ultra-thin base has a build-in 800mAh rechargeable lithium battery makes it convenient for traveling Flexible ultra-fine goose neck arm, can be adjusted to different angles to brighten desired areas. Improves energy-saving efficiency by more than 80% compared with incandescent lamps. Eco-friendly: Does not contain mercury, tungsten, UV light, radiation, or noise.