Hayati Pro Max 4000 Puffs - Box of 10 Compact, reliable, and customer-approved. Each device delivers 4000 smooth puffs from a 12mL pre-filled tank of 5% salt nicotine. Features a built-in 500mAh rechargeable battery (USB-C included) and an LED battery indicator. A consistent best-seller for retailers targeting value-focused vapers.