1、 USART data buffer up to 2K bytes, baud rate increased to 230.4Kbps. Faster, more reliable, and more feature-rich than its predecessors. 2、 OBD request byte up to 1024 bytes, can meet the needs of some special long frame communication. 3、 TP transmission protocol, Ensure wireless communication safety. Battery saver technology, innovative sleep function lets you leave it plugged in without danger of draining your car's battery. 4、 Superior compatibility, works with more 3rd party apps & software than any other adapter. 5、 Supports battery voltage drop, OBD bus active, etc. Up to 3 ways to wake up from sleep mode. 6、6. Over-voltage, over-current, over-temperature and battery drain protection, firmware updates. 7、7. Fully compatible for ELM's AT command set (ELM327, ELM329); Upgraded version of iCar pro, specifically for coding APP that requires large amount of data transmission. 8、8. Vlinker BM+ is a diagnostic scan tool, trip computer, logger, and real-time performance monitor. This pocket-size adapter won't obstruct driver legroom and features unparalleled performance, intelligent sleep mode, exceptional third party app support, and free lifetime firmware and software updates. 1*Vgate Vlinker BT4.01*User manual 1. Vlinker BM+ is a Bluetooth dual-mode product, Transforms compatible for iPhone(BLE), for Android device, or for Windows PC into a professional-grade diagnostic scan tool. 2. Unlike other OBD adapters, Vlinker BM+ won't drain your battery if you leave it plugged in. Operating Current is 51 mA, automatic sleep in idle state, sleep current is as low as 3mA.