Pocketscope Otoscope W AA Handle Pulse Oximeters Accessories Power: 4 sections of NO MSHQ BH190XL Power: 4 sections of NO call for details * One piece stainless steel handrails with bumper ends * Uprights are ultra heavy telescoping steel tube * Adjustable height and width * Height controlled by spring loaded plungers for easy adjustment * Any play is eliminated by a second knob at each upright * Platforms have durable satin topcoat and solid hardwood ends * Safety treads at both ends on platform models 5V Otoscope also has built in throat illuminator two in one instrument * Features halogen illumination and fiber optics for a cool light with no reflections or obstructions plus a rectangular viewing lens for instrumentation under magnification * 2 5V PocketScope handle has a smooth rheostat to control light intensity and features a handy pocket clip *