Caution: color: we shlp according to the color of the first picture, in the package: if the quantity is not stated in the description, we will shlp the item according to the quantity and model in the title. Handheld thermal imager highly sensitive durable practical convenient and clear handheld thermal imager nf-521 the product is shlpped based on the color or size of the main image of the product page. Features: 1. Good quality: this product is made of durable materials, the quality is very good, and it is not easy to damage. 2. Wide application: this product is widely used in medical, fire protection, archaeology, trnsporttion, agriculture, electronics manufacturing and other fields. 3. Clear picture: full-color screen, providing detailed display of infrared generated images. 4. The instrument supports switching between two visual modes, and can compare the two measurement graphs to find the fault point. It is ideal for electricians and maintenance technicians and can be used to quickly find problem areas. this product is widely used in medical, fire protection, archaeology, trnsporttion, agriculture, electronics manufacturing and other fields. Specifications: emissivity: adjustable 0.1-0.99 Response time150ms spectral band8-14um temperature measurement range -20-400 device size:60*120*210mm monitor:2.4 & Rdquo : tft lcd display resolution:320*240 pixels battery:3.7V / 2600mah automatic shutdown function: yes certification:ce drop proof:1m package included: 1 set*thermal imager without battery notes:1. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures.2. Please allow slight dimension difference due to different manual measurement.