The adhesive SP Connect Universal Interface attaches directly to a smartphone or a phone case of your choice where a dedicated SP Connect Case is not available.SP Connect Universal Interface FeaturesIt can also be used on other devices such as speakers and power banksYou are able to use any SP Connect mount to securely attach your device to bicycles, cars, motorcycles, running armbands, golf trolleys, etc. with its patented twist to lock mechanism3M adhesiveSecure and low-profile interfaceSize: 66 x 55 mm