[Multi-Touch Control]RK-X40P Ultra features innovative multi-touch functionality, allowing for seamless zoom control with two fingers and easy camera operation with single-touch gestures. [Real-Time Interaction]Enables rear-camera livestreaming with the ability to interact with fans directly on the screen, just like using a smartphone. [Synchronized Audio & Video]Offers synchronized sound and screen display for a complete monitoring experience. [Long-lasting Battery]Equipped with a 2300mAh high-capacity battery, providing up to 4 hours of continuous use. [Premium Build]Features an aviation-grade aluminum alloy body with a desktop stand for durability and versatility. [Dual Connectivity]Supports both wired (near-zero latency) and wireless screen mirroring for flexible usage. [High-Quality Display]Boasts an about 4-inch IPS full-view angle HD screen for clear and vivid image reproduction. Specifications: Model: RK-X40P Ultra Screen Size: 4 inches (3.97≈4) Battery Capacity: 2300mAh Usage Time: 2-5 hours Input: USB-C, 5V/2A Rated Power: 1.85W Wireless Connectivity: Wi-Fi 2.4G/5G dual-band, Bluetooth-compatible 5.0 Dimensions: 107 x 66.7 x 13.5mm Weight: 120g Compatibility: iOS 9.0+, Android 2.0+ Material: Aviation aluminum alloy