The new Jazzy EVO 613 comes with either normal SLA U-1 batteries or enhanced Lithium ion batteries.  Both options provide ample power, speed, and battery range. The Lithium ion version will charge faster, provide more continuous power, be lighter in weight, and last longer. The appearance of the EVO is sleek and futuristic. Six colors are available in a muted matte texture. The EVO's memory foam high-back seat provides comfort and convenience by allowing you to change the seat depth and semi-recline. The height, width, and angle adjustable armrests on the EVO help to maintain good posture and alignment. The seat's main feature is its single post, which allows it to swivel.