Dali S750-640 Thermal Binocular

• 640x480 thermal sensor: The higher-resolution detector gives the Dali S750-640 a more detailed thermal image, making it easier to separate animals, people, or vehicles from the background at longer distances.
• 2x to 4x magnification: The base 2x view keeps observation comfortable and wide enough for scanning, while digital zoom adds reach when a target needs closer inspection.
• OLED 800x600 display: A high-resolution OLED screen delivers clear contrast and deep blacks, which helps preserve target definition in darkness and improves viewing comfort during extended sessions.
• Photo and video recording: Built-in recording lets the binocular document observations in the field, which is useful for review, reporting, training, or evidence collection without extra equipment.
• IP67-rated alloy housing: The robust body and sealed construction help the binocular cope with rain, dust, and demanding outdoor use, making it suitable for regular field deployment.

About the Dali S Series

The Dali S Series sits in DALI’s outdoor thermal binocular range and is built for users who need a dedicated handheld thermal observation device rather than a clip-on or riflescope. The series includes the S750 and S750-640 models and is designed around an uncooled thermal detector working in the 8–14 μm spectral range, the standard band for passive thermal imaging in field conditions. That gives the series a clear role in surveillance, wildlife observation, search tasks, and general night-time detection.

A key characteristic of the series is its binocular format, which is more comfortable for prolonged observation than a monocular, especially when scanning large areas. DALI pairs this layout with an OLED display, visible-light imaging, and support for photo and video recording, so the S Series is not limited to simple spotting. The housing is built for outdoor use with IP67 protection, reflecting a design focus on practical field durability. Within the range, model differences center on detector resolution and feature set, with some related variants adding functions such as a laser rangefinder, while the standard S750 models remain focused on thermal observation and recording.

About the Dali S750-640 Thermal Binocular

The Dali S750-640 Thermal Binocular is the higher-resolution version of the S750 platform, combining a 640x480 uncooled FPA sensor with a 50.00 mm objective lens for users who need stronger target definition at distance. In practical use, that extra sensor resolution helps the binocular show shape, spacing, and movement more clearly than lower-resolution thermal devices, which is valuable when distinguishing a person from surrounding vegetation or identifying a vehicle outline in poor visibility.

Its 2.00 x optical magnification gives a natural starting view for scanning, while the available zoom range up to 4.00 x provides closer inspection without changing devices. The 12.50 ° field of view and 218.00 m/1000m coverage support area observation, so the binocular remains useful for searching open ground rather than only checking fixed points. A 50.00 Hz refresh rate helps motion appear smoother, which matters when tracking moving subjects or panning across terrain.

The viewing system uses an 800x600 OLED display, giving strong contrast and a crisp image presentation that suits low-light work. Separate focusing for each eye and diopter adjustment on both eyepieces allow the binocular to be tailored to the observer, improving comfort during long sessions. Recording functions for still images and video add practical value for documentation, while the waterproof, fogproof housing, 5.00 h battery life, and operating range of - 30°C / + 50°C make the unit suitable for demanding outdoor observation in changing weather.

About Dali

DALI traces its origins to the Zhejiang Provincial Testing Technology Research Institute, established in 1984. Based in Hangzhou, Zhejiang, China, the company developed from a research background into a manufacturer focused on infrared and optoelectronic systems. It was restructured in 2001 and later listed on the Shenzhen Stock Exchange in February 2008.

The company’s expertise covers uncooled focal-plane-array detectors, infrared thermal-imaging cameras and systems, and broader optoelectronic products including core components and integrated systems. In the outdoor market, DALI’s range includes thermal monoculars, riflescopes, and binoculars, giving it direct experience in field-use thermal imaging rather than only industrial equipment. The IRtech brand is presented as originating from DALI, linking the company’s detector and imaging background to products intended for observation and surveillance applications.

Main Features

• Product type: Thermal binoculars
• Series: Dali S
• Magnification: 2.00 x
• Maximum magnification: 4.00 x
• Objective lens diameter: 50.00 mm
• Field of view: 12.50 °
• Field of view at 1000 m: 218.00 m/1000m
• Thermal sensor type: Uncooled FPA
• Thermal sensor resolution: 640x480
• NETD: 60.00 mK
• Refresh rate: 50.00 Hz
• Calibration mode: Automatic, Manual
• Display type: OLED
• Display resolution: 800x600
• Image capture: Yes
• Video recording: Yes
• Video output: Yes
• Built-in rangefinder: No
• Battery life: 5.00 h
• Focusing system: Separated for each eye
• Diopter adjustment: On both eye-pieces
• Weight: 1400.00 g
• Working temperature range: - 30°C / + 50°C
• Waterproof: Yes
• Fogproof: Yes
• Color: Black

Warranty

Dali provides a 2-year warranty for the Dali S750-640 Thermal Binocular.