【360 Degree 4-Color 8-Mode】100 lumens white light with 48m beam distance, 360° shadowless lighting lets teammates spot you instantly in dark water; white/red/blue/green constant/strobe modes fit dive positioning, warning, rescue and team grouping needs, 1 light for dual illumination & signal functions. 【250h Long Runtime & Dual Battery Compatibility】For a max 250-hour runtime, no frequent replacement for multi-day diving; Tool-free battery change by twisting the light head. 【Rotary Switch & Easy Mount】Tighten the head to turn on the light, unscrew the head to turn off. Both colour and light mode can be chosen by rotating the head. Comes with a lanyard for wrapping on BCD backplate, cylinder strap and dive backpack (no extra accessories); only 50g net weight, stays stable without shaking and causes zero burden. 【Glove-Friendly Operation with Smart Memory】Non-slip silicone ring paired with high-torque rotary switch enables easy on/off and mode switching even with thick diving gloves; mode memory function saves your frequently used setting (over 3s), no repeated debugging underwater for blind operation convenience. 【IPX68 Waterproof 150M for Deep Dive Reliability】 Professional IPX68 waterproof withstands 150m deep water pressure; 1.5m impact-resistant and seawater corrosion-proof high-transparency shell The OrcaTorch SD03 is a compact and multifunctional 4-colour dive beacon. It can emit light in 4 different colors and has 8 lighting modes: for each color either constant light or flashing mode. Both color and light mode can be chosen by rotating the body. The SD03 can be used as an underwater or outdoor signal light, dive backup light, outdoor regular light, etc. Its shell is made of plastic which provides good light penetration. With excellent waterproofness, it will function up to 150m underwater. There is no doubt that the SD03 is 1 of the best choices for diving or outdoor lighting.