The BACKBONE PRO game controller, compatible with iPhone and Android, boasts a 40-hour battery life. Retail price: ¥29,700 Unopened. - Brand: BACKBONE - Model Name: PRO - Compatible Devices: iPhone, Android - Battery Life: 40 hours - Features: Xbox, Google Play Pass, Arcade compatible From the official product description: "The Backbone Pro is a premium controller that transforms your smartphone into a gaming device. It attaches to your iPhone or Android smartphone, providing the comfortable operability of a home console controller. Nine gaming platforms, such as PlayStation Remote Play, can be enjoyed from the dedicated app. Furthermore, it has built-in Bluetooth and a battery, allowing it to be used as a wireless controller for PCs and tablets."