ESMI Dimmable LED Desk Lamp / 3-Level Brightness with Sensitive Touch, Built-in Rechargeable 1200mAh Battery and Foldable Design (AC Adapter not included) &ndash; Silver Comfortable - With advanced luminous technology, ESMI table lamp is so soft to protect your eyes. You can enjoy comfortable, non-flickering light while reading. Gently touch the button to adjust or turn on/off the lamp. Adjustable - Easily find the comfortable light with 3 levels adjustable brightness (warm, white and natural light) and 180-degree rotation. Foldable design makes the desk lamp small the portable. Versatile - Built-in battery in this desk lamp enables you to use it as an emergence light or a camping light. You can charge it with normal USB AC charger or power bank. Energy Saving  These power-saving LEDs last over 20 years, and 3W equivalent to traditional 50W Bulbs. Now no bulb changing troubles anymore! WARRANTY  12 months warranty and 30 days money back guarantee. 24 hours quick reply customer service.