The ULANZI PT-15 for Camera and Smartphone fits the bill. Designed to use your smartphone, from 2.2 to 3.5″ wide, for the prompting text, you can mount this prompter on your DSLR or mirrorless camera lens using the included adapter rings, or on your smartphone, with the included smartphone expansion board. An included Bluetooth remote enables you to control optional prompting software of your choice.Use Your Smartphone as Prompter MonitorSupports DSLR & Mirrorless Cameras3 x Cold Shoe Accessory MountsLightweight ABS Plastic ConstructionIncluded Bluetooth RemoteBrand: Ulanzi