The IQOS 3 Duo Holder has been a very popular choice of people as it allows a user to use 2 sticks in a row for recharging. The holder itself is not a charging device, it requires a charger to refill its charge. The IQOS 3 DUO Holder comes with an advanced battery for 2 sticks. You must try this range of IQOS for a better experience. IQOS 3 DUO Kits have been highly rated by users.