Zitrades Nurse Penlight Reusable Medical LED Pen Light White Purple Color for Nurses Doctors with Pupil Gauge Free Battery (Warm White) penlights nurse penlight, medical led penlight, penlight with pupil gauge Diagnostic reusable Zitrades pocket clip activated nurse led healthcare pen light. Click and it holds, extra bright sealed concentric beam. Long-life and reusable, easy to use and affordable. The pre-focused pinpoint lens directly illuminates eyes, ears and throat. Included replaceable AAA batteries, Penlight sise: 13.5cm (5.3")Length x 1.3cm(0.51")diameter, LED color: warm white and pen color: blue or purple.