Features: Customized for people who lack energy to help relieve symptoms of depression and fatigue. Regulate circadian rhythm and improve sleep quality. Use it 30 to 60 minutes a day to help boost mood, increase concentration and restore energy. Light therapy can be used to prevent winter depression and eliminate bad mood. Brightness adjustable, touch switch, easy to operate. Specification: Condition: 100% Brand New Item Type: SAD Therapy Lamp LED Light Quantity: 60pcs Voltage: 5V, 1A Power: 5w Light Intensity: 6000/10000Lux, 10cm Size: Approx. 13 * 13 * 0.6cm / 5.1 * 5.1 * 0.2in Package list: 1 * Therapy Lamp 1 * USB Cable 1 * Holder