🟢 Length 128.5 mm.
🟢 530 lumens.
🟢 Runtime 3h 30min with 18650 Li-ion rechargeable battery, 2h 50min with 3*AAA Alkaline batteries. 
🟢 Depth rated to 150 meters.

🔵 Uses CREE LED, max 530 lumens.
🔵 Uses 3*AAA battery, compatible with 1*18650 battery. 
🔵 Runtime 3h 30min with 18650 Li-ion rechargeable battery, 2h 50min with 3*AAA Alkaline batteries.
🔵 6° beam angle. 
🔵 Mechanically head rotary switch offers high-reliability underwater.
🔵 Intelligent Over-Heat protection.
🔵 Water pressure resistant construction, depth rated to 150 meters.
🔵 Reverse polarity protection, to protect from improper battery installation.
🔵 Over-discharge protection function.
🔵 Aircraft-grade high strength aluminum material.
🔵 The latest diamond grade hard-anodized seawater-corrosion-resistance finish.
🔵 Two sides coated toughened glass with high water pressure resistance under deep water.