The PFN (PFalcon) 640+ V2 is the infiray model of the RH25 that is well known around the world. 
The V2 represents a significant leap forward in capabilities and function over the V1. Improved image processing combined with a higher resolution screen greatly increase the PFalcons image quality, increasing your ability to spot and identify heat signatures especially when used as a clip-on with a magnified optic. The faster screen refresh rate reduces lag, decreasing the need to lead moving targets to compensate for slower refresh rates.
Improved battery life allows you to stay focused without interruption longer. 
The new V2 eyepiece has increased the size of the eyebox allowing for greater eye relief when used as a stand alone device.
Other quality of life features such as recoil activated recording, a focus assist throw lever, USB type C connectors, Bluetooth remote and QD mount all add up to provide a big upgrade to a device that was already highly capable and great value.
Key Features
Improved NETD increasing image detail
Larger and higher resolution screen
Faster screen refresh rate
Improved eyebox and eye relief
Improved recoil rating
Improved battery life
Added throw lever for quick focus adjustments with gloves
Improved recording and bluetooth capabilities
Sensor
640×480/12 µm
Display
1440×1080 AMOLED 0.71 inch
Lens
f25mm F/1.0
Human recognition
600m estimated
Vehicle recognition
1070m estimated
NETD
≤15mK
Frame rate
60Hz
FOV
17.5°x13.1°
Ocular Lens
9x (27.78mm)
Laser pointer
No
Diopter compensation
-5 to +2 dpt
Optical zoom
1.36x
Electonic zoom
1x/2x/4x
Battery life
≥6.5h
Battery type
1x 18650/18700 (Rechargeable battery)
Storage
64 GB
Audio Recording
Yes
Recoil proof
Yes 1200g of shock
Mounting/Use Options
Handheld, helmet, clip-on, direct aim
Included Mount
Yes - Quick Detach
Weight
325 g
IP rating
IP67
Operating temperature
-40°C to +60°C
 
The device comes in a soft carry case with Samsung 18650 batteries, charger, QD picatinny rail mount, helmet mount, a second battery cap for flat top batteries (other used for nipple style), objective lens throw lever, cable with charging block, multiple heated targets for zeroing, microfiber cloth, spare mounting screws, multiple allen keys, and the user instruction manual.
 
The device comes standard with the standard Infiray warranty- user transferrable 1 year internal component, 2 year external component warranty from date of purchase.