RIX Pocket K3 review

What a night out with it looks like

RIX presents the Pocket K3 as the sharper sibling of the K2: a 384×288 12 µm sensor with NETD <25 mK at 50 Hz, a 15 mm lens with 2x base magnification and 1 to 4x digital zoom, an 800×600 OLED and electronic image stabilization, which RIX says it brings to thermal for the first time.

With a 15 mm lens on 12 µm pixels, our calculator gives a 1,125 m detection distance for a person and about 155 m (170 yd) to recognize a coyote. RIX states about 853 yd (780 m), close to our 3-pixel reach of 750 m. The horizontal field works out at about 17.5° from the lens and sensor size, so it sweeps a woodline quickly.

RIX rates the swappable 18650 at about 6 hours at 72 °F in its FAQ (the product page says up to 7), with USB-C external power, 32 GB of storage for 800×600 photo and video, and the RIX+ app for transfer and firmware updates.

The catch

Short lens, small screen. The K3 is a pocket spotter; it will not tell a coyote from a fox at 300 yards. And its 800×600 OLED matches the TS004 Pro as the lowest-resolution screen among the 384 models, with only the Axion XQ19's 640×400 below it.

The $799 price was a sale on November 9, 2026 (list $899), with no end date stated. At $899 it still ranks well, but the TOPDON TS004 Pro then costs the same with a longer lens.

Great if…

• you want a real 384 sensor for under $800
• you walk a lot and want the lightest thermal in our list
• you want a long warranty and 30-day returns from the brand store

Skip it if…

• you glass wide fields: recognition of a coyote is around 155 m by our calculator
• you want a big, sharp screen: 800×600 OLED
• you want a laser

What RIX Optics promises

Points taken from the official US product page.

• 384x288, 12 µm sensor (<25 mK) in a 0.47 lb body, by RIX figures
• Electronic image stabilization and a swappable 18650 battery
• IP67, 32 GB, 5-year warranty and 30-day returns at the RIX store

Sensor, power and recording

Sensitivity: <25 mK (RIX product page). Battery: Swappable 18650 cell, about 6 h at 72 °F (RIX FAQ), USB-C external power. Photo and video recording to 32 GB of built-in memory.

Price and availability

US price checked on November 9, 2026 at the RIX Optics store: $899, on sale that day for $799. Sale price shown on the RIX store on November 9, 2026, no end date stated. The price at the store is the one that applies.

Buying advice

In stock at $799 (sale, list $899) on the RIX Optics store on November 9, 2026, with a 5-year warranty for 384-resolution devices and 30-day returns.

The verdict

If you want a real 384 thermal for under $800, the RIX Pocket K3 is the one to buy, and the best value in our budget ranking (8.9/10): a 384×288, 12 µm sensor rated <25 mK, IP67, a swappable 18650 battery and a 5-year warranty in a 0.47 lb body, for $799 on sale (list $899). Its 15 mm lens keeps reach modest, so think woods, farms and short fields.

RIX Optics store