Pixfra Draco D635N-4K – Multispectral Binocular 4-in-1 | 640×512 Thermal + 4K

The Draco D635N-4K integrates four systems in a single binocular: (1) Thermal camera (640×512, 35 mm, 15 mK): detects body heat from humans and animals up to 1,800 m regardless of light, darkness, fog or camouflage. (2) 4K UHD day camera (3,840×2,160, 55 mm): delivers razor-sharp colour images in daylight and at dusk; combined with the IR illuminator, effective at night too. (3) Laser rangefinder (up to 1,000 m, ±1 m, Class 1): measures precise target distance at the press of a button, eye-safe and unrestricted for civilian use. (4) 940 nm IR illuminator (350 m): floods the scene with near-invisible infrared light so the 4K camera can deliver sharp images in total darkness.

Multispectral means the device can capture light from different wavelength bands of the electromagnetic spectrum: thermal radiation (8–14 μm, thermal sensor), visible light (day camera) and near infrared (940 nm, IR illuminator + day camera). The Draco D635N-4K offers three image modes: Thermal (thermal sensor only), Day camera (4K camera only) and Picture-in-picture (PIP) (both sensors simultaneously, with one image shown as an inset within the other). Switching is done via the control buttons on the unit. PIP mode is particularly useful when you need the thermal signature (for detection) and the colour image (for identification) at the same time.

Different focal lengths are physically necessary to achieve comparable effective fields of view on both cameras, because the thermal sensor chip (640×512, 12 μm) and the 4K camera chip have different physical sizes. At 35 mm, the thermal camera achieves 4.3× magnification; at 55 mm, the 4K camera achieves 5.5×. Both cameras thus show a similar field of view and are well matched for use in PIP mode.

IR illuminators are available in two common wavelengths: 850 nm and 940 nm. The difference is visibility: 850 nm produces a faint reddish glow at the front element in darkness that is visible to humans and animals. 940 nm lies outside the visible spectrum for human eyes and emits virtually no visible light. The “N” in the model name D635N-4K refers to the 940 nm illuminator. For hunting and wildlife observation this means: no startling of game and no light cone that could alert other observers.

The built-in laser rangefinder is a Class 1 laser – the safest laser classification, meaning it poses no eye hazard under normal use. Measurement is triggered by a button press: the laser is aimed at the target, emits a brief pulse and calculates the distance from the return signal travel time. The result is shown on the display. Measurement accuracy is ±1 m across a measurement range of up to 1,000 m.

IP67 under IEC 60529: “6” = fully dust-tight (no dust can enter), “7” = protected against temporary submersion to 1 m depth for 30 minutes. For a binocular in field use this means: rain, mist, splashes, mud and accidental immersion in water are not a problem. The operating temperature range of −30 °C to +55 °C covers virtually all global deployment conditions. The Draco D635N-4K is explicitly designed for rugged field use under extreme conditions.

The swappable 18650 Li-ion battery delivers at least 8 hours with Wi-Fi off at 25 °C. Active Wi-Fi streaming or cold temperatures will reduce runtime; a spare battery is recommended for extended operations. Via dual-band Wi-Fi (2.4 GHz + 5 GHz), the live feed can be streamed to a smartphone or tablet; the Pixfra Outdoor app also enables remote control and recording management. The integrated GPS logs position for geotagged captures and observation logs. The digital compass shows viewing direction and complements GPS positioning.

Pixfra provides a manufacturer’s warranty on the Draco D635N-4K – current warranty terms are available on the official Pixfra website. In Switzerland, the statutory warranty of 2 years from the date of purchase applies independently under the Code of Obligations. Swiss-Sale.ch is happy to assist with any warranty questions and coordinates directly with the authorised Pixfra service partner if required.