2Pack DIY Diamond Painting Pen with Light,LED Illumination Pen Art Applicator Accessories,5D Gem Jewel Picker Tool Embroidery Supplies Drill Bead Pen for Adult and Beginner

Product description <img alt=" DIAMOND PAINTING TOOL LIGHT PEN" src="https://m.media-amazon.com/images/S/aplus-media-library-service-media/89fa2d31-3413-45aa-8546-779607aa267f.__CR0,0,600,450_PT0_SX600_V1___.jpg"> <img alt=" DIAMOND PAINTING TOOL LIGHT PEN" src="https://m.media-amazon.com/images/S/aplus-media-library-service-media/8f4edf70-635f-4c99-ad26-fe9c3153c6ca.__CR0,0,600,450_PT0_SX600_V1___.jpg"> 1 2PCS LIGHT PEN 2 GOLD PEN SET 3 2PACK LIGHT PEN 4 23PCS LIGHT PEN MULTIPLE USE <img alt="DIAMOND PAINTING LIGHT PEN TOOLS" src="https://m.media-amazon.com/images/S/aplus-media-library-service-media/cd22737f-1c7a-4979-bc8f-5c550190e365.__CR0,0,600,450_PT0_SX600_V1___.jpg"> How to put the battery in? Both ends can be rotated to open.

Then align the positive and negative terminals to put in the battery.

What size battery you need for the light pen? You need 2 AAA barriers.

Attention: The battery is not included in our product.