What are the differences between the TK20R V2, TK16 V2, and original TK20R?

The TK20R V2 is significantly different from the original TK20R (V1) but only slightly different from the TK16 V2. Please see the chart below for the full comparisons.

TK20R V2 TK16 V2 TK20R V1
Maximum output 3000 lumens 3100 lumens 1000 lumens
LED Luminus SFT70 Luminus SST70 CREE XPL HI V3
Length x Body x Head (inches) 6 x 1 x 1.3 5.6 x 1 x 1.3 6 x 1 x 1.3
Weight (excluding battery) 4.6 oz 4 oz 5 oz
Maximum beam distance 1558 feet 1247 feet 1017 feet
Compatible batteries ARB-L21-5000 V2
ARB-L21-5000 V2
ARB-L18 Series
CR123A battery
Battery included ARB-L21-5000 V2 ARB-L21-5000U ARB-L18-2900
User interface Dual tail switches Dual tail switches Side & tail switch
Output modes 5 levels + strobe 5 levels + strobe 4 levels + strobe
Recharging port Hidden USB Type-C port on flashlight neck Type-C port on battery Micro-USB port on tail cap
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