Model Number: MNFN-005 Brand Name: Sumu Key Specifications/Special Features: LED indicator: YesBattery type: 18650 Lithium Rechargeable BatteryOutput air volume:3-Speed 873 L/Min (work time about 2 hours)2-Speed 459 L/Min (work time about 4 hours)1-Speed 242 L/Min (work time about 8 hours)Output power: 4.5 W (Max)Battery: 18650 Lithium-ion battery 1800mahCharger: USB 5V 1A DCCharging time: about 4-5 hoursWeight: 200gSize: 140 x 105 x 42mm