# Stereo microscope Deltaoptical DO-3681 with 90× magnification and LED illumination

**URL:** https://aio.lv/en/product--deltaoptical-do-3681--11506893
**Data updated:** 2026-02-25 16:41 (EET)
**Category:** Microscopes
**Manufacturer:** Deltaoptical
**Manufacturer code:** DO-3681
**EAN:** 5901691636811
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 278.99 €
**Prices and availability valid until:** 2026-07-11 23:59
**Price without VAT (21%):** 230.57 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--deltaoptical-do-3681--11506893

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 22.06.2026 | free |
| Pickup points | 29.06.2026 | 1.99 EUR |
| Courier delivery to door | 29.06.2026 | 4.99 EUR |

## Summary description

Deltaoptical DO-3681 is a stereo microscope offering up to 90× magnification with integrated LED illumination. Designed for three-dimensional viewing of samples, it suits hobbyists, education, electronics inspection and laboratory tasks that require depth perception. The instrument provides clear stereo vision for manipulation and detailed observation of small objects.

## Long description

Deltaoptical DO-3681 is a stereo microscope that delivers up to 90× magnification with integrated LED illumination. It is designed for three-dimensional observation of samples, providing stereo vision that helps with depth perception and precise manipulation. The optical design and illumination system support detailed inspection of surfaces, small components and biological specimens where spatial context is important.
Advantages
The stereo optical path provides separate images to each eye, producing a true three-dimensional view that improves accuracy when examining or working with small objects. Built-in LED illumination ensures consistent, cool light with low maintenance and stable color rendering. The instrument’s magnification range up to 90× combined with its ergonomic viewing angle allows detailed observation while reducing eye strain during extended use.
Suitable for
 Hobby and model making requiring detailed assembly or inspection
 Educational laboratories for teaching microscopy and sample manipulation
 Electronics inspection and repair, including PCB and component checking
 Biological specimen observation where surface detail and depth are relevant
Key specifications
 Magnification: up to 90× with stereo viewing
 Illumination: integrated LED light source for bright, stable lighting
 Viewing mode: binocular stereo optical system for depth perception
 Application type: designed for close-up observation and manipulation of small objects
 Ergonomics: angled binocular head to improve comfort during use
How to use
Place the specimen on the microscope stage or a stable surface beneath the objective lenses. Switch on the integrated LED illumination and adjust the light intensity if a control is provided. Start with the lowest magnification to locate the area of interest, then increase magnification up to 90× for detailed viewing. Adjust the interpupillary distance and diopter settings (if available) to obtain a sharp, comfortable stereo image. Use fine focusing to bring surface features into clear view and, when necessary, reposition or illuminate the specimen from different angles to reveal additional detail.
Usage recommendations
For consistent results, work in a stable environment with minimal vibration and avoid direct sunlight on the optics. Clean optical surfaces with appropriate lens tissue and keep the LED housing free of dust. When inspecting electronics, use antistatic precautions. Store the microscope covered when not in use to protect the optics and mechanical parts.

## FAQ

### How much does the Stereo microscope Deltaoptical DO-3681 90× LED cost, and is it available for purchase?

The price is 278.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 6 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 22.06.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can Stereo microscope Deltaoptical DO-3681 90× LED be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Deltaoptical products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Deltaoptical service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/11506893/66522957_large.webp