I received an MX900 yesterday. The newest warsun model is called MX900 find6. I love the feel and look of the light. Much better feel versus convoy L4. The side button has a nice machined chrome look to it. The output is lacking with a single 18650. It looks as if it was designed for max output with 3x18650. I only got 1.15amp at the tail with a typical samsung or trustfire 18650. I got 1.5 amp at the tail with a single panasonic ncr18650pf. maybe the driver spring has high resistance? I got 1.8 amp with 2x18650. I didn’t have the third link to see what it does with 3x18650. This light is definitely underdriven. It needs a good boost for the single 18650 format because i won’t be running it in the 2x18650 or 3x18650. The black led isolator definitely blocks some light. I got a little better output without the ring. I will be in touch with the manufacture and hopefully they can make a few changes to this light.
The back button and side button both control or cycle through all the modes. The neat part about the side switch is that when the light is on. You can hold down the side switch for 3 seconds and the light goes off. Then it is in standby mode. You can instantly turn the side switch back on and take over control of the light with the side switch only. Kind of hard to explain. I will definitely see if Warsun can eliminate the sos and make the strobe hidden with a fast double click of the side switch.
This is a solid light and was designed with heat sinking in mind. Appears to have a good thermal path to the body. The green water seal that wraps around the lense is a very unique design.