**Product Specifications for SZ 650 Series Zoom Stereo Microscope**
- **Model No.:** SZ650 B2L
- **Shape:** Cylindrical Shaped Lens
- **Usage:** Teaching, Research, Industry
- **Principle:** Optics
- **Optical Principle:** Differential Interference Contrast Microscope
- **Magnification Range:** 3.5X - 184X
- **Zoom Ratio:** 1:6.5
- **Field of View (Image Space):** 22mm
- **Working Distance:** 110mm
- **Stereo Angle:** 12°
- **Viewing Angle:** 40°
- **Interpupillary Distance Adjustment:** 50-75mm
- **Eyepiece:** Wf10X20mm
- **Objective:** 0.5X / 2X
- **Light Source:** 3W
- **Trademark:** Optec
- **Packaging:** Cartons
- **Dimensions:** 480 x 370 x 470 mm
- **Origin:** Chongqing
- **HS Code:** 9011100000
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### **SZ 650 Series Zoom Stereo Microscope**
The **SZ 650 series zoom stereo microscope** is designed with a **Galilean optical system**, offering high performance at an excellent value. It provides a magnification range from **0.7X to 4.5X**, making it ideal for various applications in education, research, and industrial settings.
#### **Ergonomic Design**
- The **40° viewing angle** ensures comfort during long observation sessions.
- A large **330mm × 300mm base** offers stability and supports a wide range of specimen types.
#### **Advanced Optical & Mechanical Features**
- Utilizes a **Greenough optical system** with a built-in rotating shaft zoom mechanism.
- Ensures **no image tilting** in the left and right light paths, reducing eye strain even after prolonged use.
- Patented design (Patent No: 201320807246.0).
- Offers a **12° stereo angle** for enhanced depth perception and a **large field of view**.
#### **High-Quality Construction**
- Delivers **high resolution**, **large depth of field**, and **excellent color contrast**.
- Constructed using **premium materials** such as PC resin covers, aluminum alloy, copper alloy components, and austenitic stainless steel drive parts.
- Designed for **smooth and precise operation** with advanced manufacturing and assembly techniques.
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### **Technical Specifications (0.7X to 4.5X)**
| Type | SZ 650 |
|------|--------|
| Magnification Range | 0.7X to 4.5X |
| Zoom Ratio | 1:6.5 |
| Field of View (Image Space) | Φ22 mm |
| Working Distance | 110 mm |
| Stereo Angle | 12° |
| Viewing Angle | 40° |
| Interpupillary Distance Adjustment | 50 mm – 75 mm |
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### **Auxiliary Objective and Eyepiece Options**
| Auxiliary Objective | 0.5X | 0.75X | 1X (Built-in) | 1.5X | 2X |
|---------------------|------|-------|---------------|------|----|
| Working Distance | 189 mm | 122 mm | 110 mm | 42 mm | 36 mm |
| Eyepieces | Magnification (10X/φ22mm) | Actual Field (mm) |
|-----------|----------------------------|-------------------|
| 10X | 3.5–22.5X | 62.9–9.8X |
| 15X | 5.25–33.75X | 45.71–7.11X |
| 20X | 7–45X | 34.28–5.33X |
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### **Standard and Optional Accessories**
| Item | SZ650BP | SZ650B2L | SZ680BP | SZ680B2L | SZ810BP | SZ810B2L |
|------|---------|----------|---------|----------|---------|----------|
| Binocular | – | – | – | – | – | – |
| Trinocular | – | – | ○ | ○ | ○ | ○ |
| 10X Eyepiece (Φ22mm) | – | – | – | – | – | – |
| 10X Eyepiece (Φ23mm) | – | – | – | – | – | – |
| 10X Eyepiece (Φ24mm) | – | – | – | – | – | – |
| 15X Eyepiece (Φ16mm) | ○○ | ○○ | ○○ | ○○ | ○○ | ○○ |
| 20X Eyepiece (Φ12mm) | ○○ | ○○ | ○○ | ○○ | ○○ | ○○ |
| 0.5X/2X Objective | â—‹ | â—‹ | â—‹ | â—‹ | â—‹ | â—‹ |
| Light Source | – | – | – | – | – | – |
| Reflecting 3W LED | – | – | – | – | – | – |
| Transmitted 3W LED | – | – | – | – | – | – |
| Pillar Stand | â—‹ | â—‹ | â—‹ | â—‹ | â—‹ | â—‹ |
| Focusing Arm Stand | â—‹ | â—‹ | â—‹ | â—‹ | â—‹ | â—‹ |
| C-mount (0.5X, 0.7X, 1X) | – | – | ○ | ○ | ○ | ○ |
**Note:** “–†= Standard accessory; “○†= Optional accessory.
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### **Product Images**
[Image 1](http://i.bosscdn.com/uploads/0e/f2/83/2cc6ce61128204c5684b0540e3.jpg)
[Image 2](http://i.bosscdn.com/uploads/32/de/d2/aa670f4a7c50c52dceef8a677c.jpg)
[Image 3](http://i.bosscdn.com/uploads/d7/c4/5e/678cc0ecc1cf4e56cb2f6e906d.jpg)
[Image 4](http://i.bosscdn.com/uploads/e7/ec/b4/3b7187479853e5abb379f5c56c.jpg)
[Image 5](http://i.bosscdn.com/uploads/98/c4/76/6b50f719ac9e78fb2825a5c14d.jpg)
[Image 6](http://i.bosscdn.com/uploads/e0/27/1b/0c8ef6e4c6b938c9af98c600f5.jpg)
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This **SZ 650 series zoom stereo microscope** is a reliable and versatile tool for detailed observation and analysis across multiple fields. Its ergonomic design, advanced optics, and durable construction make it a top choice for professionals and educators alike.
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