Details  W17OA EM-MS (17")   - Long run time battery with overcharge and over-discharge protection system.   - Rated Input: 30W   - Charging Time: Approx. 8-10 Hours- Rechargeable Table Fan (17”)-  Long run time battery with overcharge and over discharge protection system.- Switch mode power supply (SMPS) system ; Range: 90V-265V- High/Low/Natural speed selection- Auto switching between AC to DC- Bright LED night light.