The dimensions of the business environment discussed in the above case are as follows:

1. Economic Environment:
- The relaxation in import duties on electronic items by the Indian Prime Minister created an opportunity for Spencer Electronics Ltd. to export its products to India.
- This change in the economic environment allowed the company to expand its business and explore new markets.
- The appointment of retailers in India indicates the company's response to the economic environment and its strategy to take advantage of the relaxed import duties.

2. Legal Environment:
- The announcement of relaxation in import duties on electronic items by the Indian government reflects the legal environment in which Spencer Electronics Ltd. operates.
- The company had to comply with the import and export regulations of both Singapore and India to establish its business operations in India.
- The appointment of retailers with direct online links to suppliers suggests that the company adhered to the legal requirements of establishing a supply chain in India.

3. Technological Environment:
- The direct online links between retailers in India and suppliers indicate the utilization of technology to manage the supply chain efficiently.
- The use of technology allows for real-time communication and enables the retailers to replenish stocks promptly when needed.
- Spencer Electronics Ltd. is likely to have invested in technology infrastructure to support its operations in India and ensure smooth coordination with the retailers.

4. Competitive Environment:
- The relaxation in import duties on electronic items in India may have attracted other foreign competitors to enter the Indian market as well.
- Spencer Electronics Ltd. had to appoint retailers in India to establish a competitive advantage and secure its market presence.
- The company's success in the Indian market will be influenced by the actions and strategies of its competitors in the electronic industry.

5. Social-Cultural Environment:
- The decision of Spencer Electronics Ltd. to export its products to India indicates its recognition of the social-cultural environment in India, where there is a demand for electronic items.
- The company's choice to appoint retailers with direct online links reflects the growing trend of online shopping in India and the preference for convenience among consumers.

In summary, the dimensions of the business environment discussed in the above case include the economic, legal, technological, competitive, and social-cultural environments. These dimensions shape the opportunities and challenges faced by Spencer Electronics Ltd. as it expands its business operations to India.