1Stainless steel suspension bracket designs, removable protection cover and better heat dissipation performance, easy to cleaning. 2Strong power, smoothly, stable performance and low noise, long service life. 3The work indicator light is green when working, and red when low power or charging, simple and clear. 4700mah lithium battery, 2.5 hours of charging time, 300 minutes usage time. 5USB fast charge, can be powered by computer, charger, laptop and power bank.