Adjustable Resistance Dial: The dial at the top (marked 5 kg to 100 kg) allows you to change the resistance level, making it suitable for users at different strength levels. Ergonomic Handle: The handles are shaped to fit comfortably in the hand, reducing strain during use. Finger Holes:The design includes specific finger slots for better grip and stability during exercises. Spring Mechanism: A durable spring at the top provides the resistance as you squeeze the handles together. Reset Counter:This particular model seems to have a built-in counter to track repetitions, located at the bottom of the handle.