Main Features: 4 LEDs Total & 3 Level Brightness. 2 Leds Each Arm, 1 Spotlight and 1 Wide Angle LED each side. 1st Click is Wide angle Light, 2nd Click is Spotlight, 3rd Click is ♥ Spot&Wide light, 4th Click off. Functions are the same for each arm. Rechargeable Design- With inbuilt lithium battery, The battery takes only 2.5 hours to get fully charged and can last up to 6-8 hours with high brightness and 10 hours with normal brightness. Flexible Arms- Bendable and strong, allow you to choose the best lighting angle in different environment, simple and easy to create the perfect brightness for yourself. Portable Lightweight- Wear it around your neck to free your hands, extremely convenient and practical.The LED Book Light doesn't require much space and can fit easily into your Baggage, making it an ideal choice from all aspects. Wide Application- Perfectly suitable for indoor or outdoor, such as reading, night jogging and mending, writing, work, and so on. Light allows hands free while doing anything. Specifications: CRL: >80 LED beads: 4 Luminous Flux: 36LM Lifespan: about 50000hrs Color temperature: 6500-7000K Battery capacity:3.7V; 650mAh; 2.4WH. Material: rubber& built-in lithium battery Charging time: about 2.5hrs（full charge） 3 Brightness Level: spot light only; flood light only; spot light& flood light Product Dimension(when used): Lentgh：27cm/10.6in，Width：10cm/3.94in Discharge time (after full charge): about 6hrs (Highest Brightness Level); about 10hrs(Lowest Brightness Level). Package List: 1 x USB Cable 1 x Rechargeable Hands Free Book Light With special hands-free design, this unique neck light is much more helpful to operate when your hands are full. This multi-functional reading light is suitable for reading, night jogging and mending. The bendable book light doesn't require much space and can fit easily into your carry-on suitcase, making it convenient and flexible from all aspects.