Features COLOR AND BRIGHTNESS ADJUSTABLE: 3 color temperature modes, yellow 3000K, warm white 4000K, and cold white 6000K. Each head has an independent switch that can adjust 5 brightness levels. RECHARGEABLE AND LONG LASTING: USB charging, and the fixed charging port will not come off. The included premium rechargeable 1000mAh battery provides up to 60 hours of wireless reading time (minimum brightness). EYE PROTECTION AND ERGONOMIC DESIGN: Unique lens protection, more uniform light. No flicker and blue light filtering design. To defend your vision. The ergonomic scarf design hangs on the curved neck, and the armrest is soft and adjustable, so you can get the most comfortable angle. NOT INTERFERING WITH OTHERS: Special narrow beam angle (90 °) design. The light is bright enough for the area you are positioning, while also dark enough not to disturb your sleeping partner. APPLICABLE SCENARIOS: Reading light is lightweight and easy to carry, suitable for indoor and outdoor use in bedrooms, dormitories, schools, etc. Can be used for reading, repairing, jogging at night, weaving, etc. Spec: Item Type: Neck Light Material: ABS, Silicone Number of Lamp Beads: 2 x 3030 dual color lamp beads Charging Time: 2.5H Working Hours: 12 to 60h Light Source Color: White light, warm light, warm white light Battery: 1 x 1000mAh rechargeable battery (shipped with built in battery) How to Use: Use directly! packing list: 1 x Light 1 x USB Cable Package List 1 x Light 1 x USB Cable