Here are the steps on how to use Promo Codes when shopping at steinhartwatches.de: Sign in to Steinhart Watches, select the items you want to buy and add to your cart. Next, it will jump to the payment page, select Coupon Codes of your Steinhart Watches on the payment page, and complete the payment. Also, welcome to this promotion from Steinhart Watches on October: Get Up To 50% Off Rakuten | Click Here.