Sittin' Pretty Starry Night Gel Foam Pad 18 x 16 x 2¿ Mattress Overlays Toppers Free Sale Certificate(FSC) Power supply 16 7136 Free Sale Certificate(FSC) Power supply ≤3mA Battery A10 Working Time 80 hours Battery type zinc empty battery Warranty 1 Year This instrument is a significant advance in hand held otoscopy providing an improved view for enhanced learning and decision making * A nearly complete view of the tympanic membrane with approximately twice the field of view and 30% greater magnification than a traditional otoscope * Better clarity and definition of landmarks * The ability to adjust focus for variable ear canal length or farsighted eyes Two chamber design for maximum pressure relief * Sittin' Pretty Starry Night Gel Foam Pad * Gel surface relieves interface pressure * Water based gel reduces skin damaging perspiration * High density foam increases comfort and stability * Vinyl cover is incontinent proof * Wipes clean for easy care * Safety ties secure cushion to wheelchair *