Upgraded switch design for more stable performance; does not automatically turn on when pushed by hand. Easy to activate without disassembly. Powered by lithium batteries, ideal for hunting at dusk with over 48 hours of battery life. Suitable for use on arrows during night or daytime. Designed to enhance efficiency in low-light conditions, improve aiming precision, and increase retrieval visibility. Features a flashing high-visibility light to help locate your arrow. Compatible with aluminum, carbon, and fiberglass shafts. Material: PC Color: Red Package Contents: 3 x 4.2mm luminous nocks 3 x 5.18mm conversion rings 3 x 6.2mm conversion rings Note: Light and screen display differences may cause slight color variations between the image and the actual item. Measurement error allowed is +/- 1-3 cm.