Feature: 1. Thumbs Lamp: Can pass light from one hand to the other, making it disappear and reappear in various effects. 2. Easy To Use: Open automatically when inserting the tip of the finger, close when removing, turn on the light secretly under pressure from the tip of the thumb, easy to use. 3. Simulation Design: Using fine workmanship, with simulation design, it is vivid, lifelike, exquisite. 4. Premium Materials: Made of premium PVC, durable, not easy to wear, not easy to damage, safe to use. 5. Wide Applications: Works on most thumbs and fingers. It can be used for Halloween, concerts, nightclubs and performances. Specification: Item Type: Thumbs Lamp Material: PVC Product Size: Approx.4.5cm 1.8in Battery (shipped with Built in Battery) : 1 x Cr1220 Button Battery, 3v, 40mah Applicable Age: for Above 14 Years Old Weight: Approx. 85g 3.0oz How to Use: Button battery card is removed, under the pressure of the thumb tip can light Package List: 5Pairs xThumbs LampThumbs Lamp: Can pass light from one hand to the other, making it disappear and reappear in various effects. Premium Materials: Made of premium PVC, durable, not easy to wear, not easy to damage, safe to use. Wide Applications: Works on most thumbs and fingers. It can be used for Halloween, concerts, nightclubs and performances. Easy To Use: Open automatically when inserting the tip of the finger, close when removing, turn on the light secretly under pressure from the tip of the thumb, easy to use. Simulation Design: Using fine workmanship, with simulation design, it is vivid, lifelike, exquisite.