Upgraded switch design for more stable performance, preventing automatic activation. Can be manually pushed up without disassembly to turn off. Compatible with lithium batteries, providing over 48 hours of runtime, ideal for hunting at dusk or in low-light conditions. Suitable for use during night or daytime to improve arrow visibility. Designed to enhance accuracy, precision, and retrieval efficiency in low light. Features a flashing high-visibility light to help locate arrows. Works 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: The product package includes only the items listed above. Other accessories are not included. Note: Lighting and display differences may cause slight color variations between the image and the actual item. Measurement error allowance: +/- 1-3 cm.