【PERFECT MED KIT】: Contained 3 pack Medical penlights, set comes with 6 packs AAA batteries. Nurse Led Penlights Nurse Accessories for Work, Medical Supplies Penlights for Nurses Doctors EMT Trauma. | 【PERFECT DESIGN】:The penlights with pupil gauge and a 5cm-ruler, helpful for you to measure the size of pupil dilation and body parts, the penlights can be powered by 2 pieces AAA batteries with keeping the positive pole “+” direction of batteries to the pen bulbs. | 【USEFUL】: The penlights are made of premium aluminum alloy and led bulb, very simple to operate by pressing the button, which make sure these nurse penlights durable and long-life using. | 【EASY TO USE】: Tired of losing pen light? Our nurse pen lights are push-button on/off switches with pocket clip, perfect size and very handy penlights are easy to fit in your hand. Keep them within reach at all times with you! | 【Why Choose Us?】: MEUUT provide 60-Day Money Back guarantees, 12-Month Worry-Free warranty with considerate customer service makes your purchase risk-free. We guarantee 100% satisfaction and quality.