Honeybud Airfit Ultra Smartwatch Offer: Buy Airfit Ultra smartwatch at Rs 3999 worth Rs 6499 from Honeybud. Honeybud Airfit Ultra offers an easy, always-on way to take an electrocardiogram. Anytime if you feel palpitations or an irregular heart rhythm, Simply Fire up the ECG App and place the Smartwatch on your wrist. In 30 seconds, your medical-grade ECG is ready and an graph of your heart rate will be displayed. Shop now