Jainex 0.5W Round B22 Night Bulb (White, Pack of 6) Price starts at Rs. 245. The lowest price of Jainex 0.5W Round B22 Night Bulb (White, Pack of 6) is at Flipkart. Jainex 0.5W Round B22 Night Bulb (White, Pack of 6) is not available in other online stores. Jainex 0.5W Round B22 Night Bulb (White, Pack of 6) is available in White colours across various online stores in India.