Easy to use Yealink SIP-T53C IP Phone features an adjustable 3.5-inch color LCD screen that can be easily adjusted to a comfortable viewing angle according to you. SIP-T53C is connected to the latest version of Yealink Optimal HD Voice technology. Hearing aid compatible (HAC), its HAC earpiece helps a person with hearing loss hear the voice more clearly. Wireless transmission The Yealink SIP-T53C IP Phone not only features built-in Bluetooth 4.2 for Bluetooth headsets and mobile contact sync, but also built-in dual-band Wi-Fi for Wi-Fi connectivity, allowing for easy access to 5G Wi-Fi connectivity. Moreover, the IP phone can function with Yealink VC Desktop together to share content from your laptop, making collaboration much easier. Highly expandable Two built-in USB 2.0 ports allow you to enjoy recording calls via USB using a USB memory stick. Through this USB port, you can also connect a wired/wireless USB headset without having to connect the Yealink EHS36, and connect up to 3 Yealink EXP50 expansion modules, which can be programmed with 180 paperless DSS keys. Efficient Installation and Provisioning Yealink SIP-T53C supports efficient provisioning and seamless mass deployment with RPS and Boot mechanism to help you realize Zero Touch Provisioning without any complicated manual settings. Additionally, the unified firmware and auto-p template that applies to T53/T53W/T54W/T57W phone models saves even more time and costs for businesses.