Lithium Ion battery technology means the PRIO is always ready to use, has no memory effect for longer battery life & minimal self-discharge, Quick Charger: 80% capacity in only 30 mins, 7.2V, orbital stroke rate: 16000rpm, oscillation circuit: (dia)1.2mm, sanding surface: 104cm-square, Small, handy & innovative, it reaches even into the tightest corners & hard to reach places, Velcro sanding sheets for quick & easy replacing, A sanding sheet tip that can be rotated which increases the service life of the sanding sheet threefold, Comes with 2 sanding sheets, 1 cleaning fleece & charging station