Features: The Wi-Fi display adapter can display the small screen of the phone, tablet PC or laptop to big screen devices such as HDTV or projector, high definition up to 4K, gives you a great screen experience 2.4G and 5G dual-frequency signals (adapted to different types of mobile phones) can be manually switched according to the strength of environmental signals, giving full play to the advantages of dual-frequency Plug and play, no drive or APP needed. It works on 99% of smart phones. Wirelessly mirror and share all contents on the big screen: pictures, videos, online movies, web browsing, online shopping, documents and more. Built-in heat dissipation chipset, heat dissipation and pressure resistance have been greatly improved, the work is stable and smooth, the product is durable. Perfect for learning, business meeting, family party and teaching. Specifications: Type: 2.4G, 5G Model: R8 Material: ABS, PVC Color: Black Size(D*H): About 58.5x12.5cm HDMI Cable Length: About 20cm Interface: HDMI Resolution: 4K/30Hz, 1080P/60Hz, 720P/60Hz OS: For Android, for ISO Memory Cards Support: CF, MINISD,SDHC,U Disk,TF, MMC,XD Card Video Format Support: ASF, AVI, VOB, MPEG, DAT, RM, RMVB, WMV, FLV, MP4, SWF, TP, TRP Menu Language: Chinese/English/Can be set in different languages Package Included: 1pc x Wireless Display Dongle 1pc x Manual 1pc x Antenna Note: 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 0.5-2 cm differences due to manual measurement.