The Technical Diving Helmet is equipped with 2 Helmet Light Mounts, designed to accommodate various light models such as AL1300NP, AL1300NP Tail, AL1300WP, AL1300WP Tail, AL1300XWP, AL1300NP Camouflage, AL450WM Tail, and AL450NM Tail II. Please note that lights are not included and must be purchased separately. Additionally, the Helmet Head Light Mount is compatible with HL1000N, HL1000XW, HL1000XWN, HL450N, and HL450XW models. Both the Helmet Head Light Mount and the lights themselves are sold separately. For comfort and customization, the helmet features an Adjustable Knob to accommodate different head sizes ranging from 52 to 60 cm. Constructed from Acrylonitrile Butadiene Styrene (ABS) material, the helmet ensures durability and reliability in underwater environments. Its dimensions are 180x275 mm, and it weighs 585 grams in air. Available in Urban Grey and Charcoal Black, the helmet also includes Helmet Light Mounts for two AL450 or 1300 lights, enhancing visibility and safety during dives.