100 lumen, 2,000 candela with 1 hour runtime.
The streamlight TLR7-SUB is another great option, and you get quite a bit more performance with
500 lumen and 5,000 candela, and 1.5 hours of runtime, more candela is always a good thing even more then lumens, candela will give you farther throw and greater light barrier penetration. Like if your driving down the road and you have your low beam on and someone is driving towards you with super bright high beams on, you can't see because their bright have more candela, candela is what let's you see past an opponents flash light or spot someone hiding behind a light pole.
Vuds has the P365 compatible TLR7-SUB in stock here
budsgunshop.com/product_info.php/products_id/133450/streamlight+69401+tlr-7+ultra+compact+weaponlight+sub-compact+pistol+w+accessory+rail+sig+p365+led+500+lumens+black+aluminum

Glen, this model is 100 lumens for the sig p365. Hope this helps

Glen, 100 Lumens. -- ((Streamlight TLR-6 Light/Laser Sig P365 Specifications and Features)): -
Streamlight Item Number: 69284 - Weapon Mounted Light/Laser - Fits: Sig P365 - Light Type: C4 Luxeon LED - Light Output: 100 Lumens, 2000 Candela - Light Range: 89 Meters - Light Modes: LED Only, - LED/Laser Combo, Laser Only - Body: Impact Resistant Polymer, IPX4 Water Resistant - Overall Length: 2.97" - Overall Weight: 1.27 oz - Operating Temperature:-20 Degrees To 120 Degrees F - Batteries: CR-1/3N - Battery Life: Runs 1 Hour LED Only or LED/Laser Combo - Color: Black.