Description, Usage & Why Every Diver Needs One

Illuminate your dive – wherever, whenever.

The XTAR SD1 is a compact multi‑colour beacon built for safety and versatility. Designed to be your go-to companion, whether you're night diving coral reefs, signalling dive buddies, or heading ashore after a dusk dive, this beacon does it all.

Logical reasons to dive with it

Stand out underwater – choose from white, red, blue, or green constant or strobe modes to adapt to visibility, signalling or preserving night vision.
Fully rugged – waterproof to 100 m and impact-resistant up to 1.5 m, it's engineered to handle the harshness of the deep
Long-lasting power – up to 16 hours on CR123A or 10 hours on 16340 lithium in flashing mode—outperforming many dive strobes

Emotional reasons to own one

Peace of mind – keep tabs on your buddy in murky or vast conditions.
Confidence on every dive – easy-to-use twist interface lets you switch modes even with gloves on.
Tiny yet mighty – at just 27 g and 66 mm long, it won’t weigh you down

Every diver, from weekend explorers to technical professionals, will appreciate the assurance and visibility this beacon brings to their kit.

Features & Technical Specifications

Feature	Details
Light Colours	White (25 lm), Green (25 lm), Red (10 lm), Blue (10 lm)
Lighting Modes	8 total: constant & strobe for each colour – easy twist selector
Battery Compatibility	Accepts non-rechargeable CR123A or rechargeable Protected 16340
Runtime	White/Green: 5 h const or 10 h strobe; CR123A: up to 16 h strobe
Memory Function	Remembers last used mode after 5 s for seamless reactivation
Low‑Power Reminder	Automatically lowers brightness when battery runs low
Durability	Waterproof to 100 m, impact-proof to 1.5 m
Size & Weight	Head: Ø 23 mm; Length: 66 mm; Weight: 27 g (excl. battery)
Attachment Points	Enlarged lanyard hole + snap hook – secure it anywhere
Included in Pack	O‑rings, manual, snap hook, lanyard; options with battery (900mah rechargeable battery)

Ready to Dive?

Equip your kit with the tiny yet powerful XTAR SD1 beacon—and dive with confidence, clarity, and style.

XTAR SD-1 Mini Dive Beacon (with rechargeable battery)