Black Diamond Astro 300 Headlamp vs Petzl Swift LT
Weight and specs compared for 2026 — and which one to choose.
Ultralight 300-lumen headlamp at only 45g. Compact waterproof design with single AAA battery; perfect for thru-hikers minimizing base weight.
Check price Full details →Ultra-compact USB-C rechargeable headlamp with 380 lumens and red night-vision mode. Made with 50% recycled materials. IPX4 rain resistant.
Check price Full details →Black Diamond Astro 300 Headlamp vs Petzl Swift LT: which should you buy?
If saving weight is your priority, the Petzl Swift LT wins — at 43 g it is 2 g (4%) lighter than the Black Diamond Astro 300 Headlamp (45 g). That said, the heavier option may justify the extra grams with more capacity, durability or comfort, so weigh the trade-off against how you'll use it.
See where both rank against everything else in this category on the lightest lighting page, or browse the full gear weight database.