I don't have a smartwatch, so I bought this thinking I could put my phone in it and go for a walk! But I never did... (~_~;) I hope someone will give it a try for me. I bought it at Hands, which used to be in Umeda Daimaru. It cost 3080 yen. Product Name: SNAP Gear GLOOP BELT S SPRINT Color: Turquoise Here is the product website. Please refer to it. https://snapgear.jp/products/detail/25