1Pc Underwater Strobe Signal Light Scuba Night Dive Marker LED Flashy Safety Lamp Firefly Diving Beacon Beam 200M Underwater 200 Hour Duration with Battery -Green

First dive had 2 of these lights on each our tanks - 1 red / 1 green for both my buddy and I. both were flashing as we entered the water - and tightly sealed. 1. Could not see the red light (in Bonaire with nearly unlimited viz) on night dives - when more than 1 meter away - very dull - and we each lost 1 light due to leaks. So you get what you pay for. Should be marketed as single or 1/2 use lights.

Used this for a number of night dives during a dive trip to the Bahamas. Unit worked fine, and came with two batteries which was nice. I don't believe we dove deeper than 40 feet, so I can't attest to it's reliability at depth. I didn't have any failures in terms of it being water tight. It's not the brightest light by any measure, but it served its purpose and was worth the price. I also liked not having to throw away cyalume sticks after a couple uses.

Worked great at 40 feet for 37 min night dive in 65 degree F. LED is not super bright, but enough to identify dive buddy. Lanyard connection looks a bit weak, but there are multiple eyelets. I used a regulator mouthpiece zipties to secure it. Comes with extra battery.

Bought this for a dive trip and it did not work.

Good product. Worked well on two dives. Only complaint is that after it warmed up it turned back on. Caught it when I got home but after you rinse it give it another hair turn so it doesn’t turn back on.

Lousy. Flooded on 2nd dive

only lasted for 3 night dives and then leaked. messed up battery.

Was a joke strobe my ass lol. Don't buy waste of money.

Muy practico para no perder la referencia del guía en inmersiones nocturnas

日常的にキーホルダーとして使ってます。ランプヘッドを回す回転式スイッチなので、片手での操作はしやすいとは言えませんが、誤操作防止と防水機能の為にこういうデザインなのでしょう。ランプヘッドを締め込むようにすると、光が点滅します。見たところ、Oリングは2重になっていますが、ランプ消灯状態(ランプヘッドが緩んだ状態)ではOリング1個が有効、ランプ点滅状態(ランプヘッドが締め込まれた状態)ではOリング2個が有効となります。ランプのランタイムは分かりません。乳白色プラスチック樹脂のケーシングは丈夫な造りだと思います。光の色はグリーンを選びましたが、明るさは夜間歩行時のマーカーランプとして十分かと思います。潜水はしないので、潜水時のレビューはできません。卵のような形状の手触りから、ポケットの中をまさぐっても探すのに分かりやすいです。

Bought it, tried it - I will never bother again; it works. but doesn't do anything useful; this comes from a diver with 44 years of experience.

This is a cheap plastic LED light that is very dim and not fit for SCUBA.

Funciona. Mi padre ya lo ha usado para salidas de buceo nucturnas