Is the Altiro AT0311B suitable for diving and spearfishing? The Altiro AT0311B is a dedicated IPX8 diving flashlight built for underwater use, including spearfishing, night dives, and marine exploration. With up to 2000 lumens of output, it provides strong beam penetration through murky water and low-visibility conditions, making it suitable for coastal and open-water environments around New Zealand. This is a handheld dive torch — not a standard camping headlamp. What does IPX8 mean for underwater use? IPX8 means the flashlight is designed for continuous underwater submersion beyond 1 metre depth. The AT0311B features: Sealed construction O-ring protection Waterproof body design This makes it suitable for diving, spearfishing, and prolonged exposure to water. (Not intended for extreme commercial dive depths unless manufacturer rated.) How many lumens do I need for night diving? For underwater use: Shallow reef exploration: 800–1500 lumens Night diving & spearfishing: 1500–2500 lumens Deep or murky water: 2000+ lumens At 2000 lumens, the AT0311B sits in the strong-output range for recreational divers. Why use a 26650 battery? The AT0311B uses a rechargeable 26650 battery, offering: Higher capacity than 18650 cells Longer runtime underwater Stronger sustained output
