Bengaluru-based technology startup Witworks on Friday launched its flagship smartwatch 'Blink' priced at ₹12,999. The device runs on Witworks' own voice-based operating system Marvin OS. Blink has a 1.39-inch screen, 1 GB RAM, 8 GB internal storage and can run for up to two days on a single charge. The company has opened pre-booking for the smartwatch at ₹2,500.