The white Med comfort diagnostic lamp shade has a practical pen shaped, with spring clip with contact. Will be delivered with interchangeable and replaceable battery. Properties of the diagnostic lights Pen shaped,/Penlight Colour: White Material: Aluminium tube, outer ABS (Acrylonitrile Butadiene Styrene) Plastic Spring clip contact Light Bulb: 2.2 V Size (Height x Width x Depth): 16.5 x 7 cm Includes 2 x 1.5 V AAA batteries