Check the listing for details. Maclan Wireless Bluetooth Programmer Module for ESC MCL4340. Condition: New. Listed at 49.99 USD. The Maclan Racing Bluetooth ESC Programmer is designed for transmitting data wirelessly between Maclan Racing ESC and mobile devices (Android OS with 5.0 or later, and iOS with 13 or later). With Maclan Racing Smart Link App, it allows ESC programming, firmware updating, and viewing data logs. Specifications Interface: micro USB connector Bluetooth 5.0 Dimensions: 35x35x10mm Weight: 11g Supported OS: Android OS 5.0 or later, Apple iOS 13 or later P/N: MCL4340 Supported ESC DRK 160 DRK 160+ TSR DRK 160 RS M32t Pro 160 M32t Pico 100 M32e Pro 200 IMPORTANT NOTE: All ESC must be updated with the latest firmware before it will work properly with the Bluetooth ESC Programmer. Quick Installation Guide: Download/ install the latest Maclan Smart Link Windows App (Build version 20240517-285) Update your Maclan ESC on the latest Maclan Smart Link Windows App Update the iOS/Android Maclan Smart Link app