A interesting flashlight recommend, Multifunctional LED Flashlight,Triple Reflector by 3 Types LED Light Source White/Red/UV Flashlight. Lovely design, cute ,fatty,blue switch ring. may we can name it “blue fatty” 
Triple Light Source:The flashlight is installed Samsung LH351D 5000K CRI 90,Cree XPEBRD-L1 red beam and LG UV LED.
White light source has High(1200lm)/Medium(400lm)/ Low(120lm)/Eco(5lm)/Strobe(1200lm)/SOS(1200lm) modes; red light source has High/Medium/Low modes; UV light has Medium/Low lighting modes. It memorizes the last brightness level used in the general modes (except red and UV beam).
It could be compatible with almost all batteries in the market , 26650/21700/18650 and able to use 2*CR123A battery in an emergency, good running time when use the 26650 battery.
Also with smart design with USB Rechargeable port,power indicator .
Here is a link to read more specs :WK30 KIT
A kit including :
1x Flashlight
2x Rubber o-rings
1x Lanyard
1x Instruction manual
1x USB charger cable
1x 18650 conversion tube(Backup)
1x 5000mah 26650 Li-ion battery
With affordable price $39.99, and here share a 20% code “6NY4HB7C”, $31.99 after discount. Not sure if the UI is good to meet the demand, no reviews till now.