The Prep Bible.
Both of these are Fenix LED flashlights, but they are built for different jobs. The Fenix E03R V2 is a tiny keychain light made of metal, measuring just 2.07 in long and weighing 1.06 oz, with a USB power source. The Fenix LD22 V2 is a larger EDC penlight made of aluminum, at 5.83 in long and 3.39 oz, running on battery power with a voltage range of 3.0-6.8 V.
The E03R V2 suits someone who wants something small enough to sit on a keyring at all times. The LD22 V2 suits someone who wants a longer, more substantial handheld light and does not mind the extra size and weight.
Spec for spec
SpecFenix E03R V2Fenix LD22 V2
Item Weight1.06 oz3.39 oz
MaterialMetalAluminum
Item Height0.51 in0.71 in
Item Length2.07 in5.83 in
Item Width1.02 in0.85 in
Lighting TechnologyLEDLED
Power SourceUSBBattery