NITEHOG Viper 35 Hunter Gen 2 thermal imaging attachment - one of the lightest 640 attachments

The Nitehog Viper 35 Gen 2 Hunter is a modern high-end thermal imaging attachment (clip-on) – focusing on compact design, high image quality, and intelligent (AI) features. It is currently one of the lightest 640 thermal attachments on the market.

Technical Data

Sensor: 640 × 512 px, 12 µm
NETD: < 15 mK (very sensitive)
Lens: 35 mm F1.1
Frame Rate: 60 Hz
Detection Range: up to approx. 1750 m
Display: OLED 1024 × 768
Weight: only ~330 g
Battery: approx. 5–6 h runtime

The combination of a 640 sensor + extremely low weight is the major unique selling point.

Extremely light for this performance

only ~330 g → significantly lighter than many 640 devices
e.g.:

Hikmicro TQ35C ≈ 450 g
TQ50C ≈ 500 g

Advantage:

better balance of the weapon
ideal for stalking

Significantly better image quality (vs. Gen1)

jump from 320 → 640 sensor
significantly more details
better response

especially visible in:

fog
rain
dense vegetation

AI Features
The Gen 2 brings real "smart features":

AI Rangefinder (no laser!)

calculates distance automatically

Hot Target Tracking

detects & tracks warm targets

Target Lock + Compass

shows target direction

Recoil-activated Video

automatically saves:

10 seconds before & after the shot

practical for:

tracking
analysis