Specification: Item Type: Balance Lamp Material: ABS, magnetic ball Rated Power: 5W Rated Input Voltage: 5V Rated Input Current: 2A Power Supply Mode: USB Package List: 1 x Balance Lamp 1 x User Manual 1 x USB Cable Note: 1. This product does not include a power adapter, and supports the use of 5V, 1A/5V 1.5A/5V, 2A power adapters that meet the certification requirements. 2. It is forbidden to use the computer for power supply to avoid damage to the computer or the lamp body. 3. It is forbidden to use non‑certified power adapter to supply power, so as not to cause damage to your body.