Easy to useThe 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. The SIP-T53C is bundled with the latest version of Yealink Optimal HD Voice technology. Compatible with hearing aids (HAC), its HAC handset helps a person with hearing loss hear their voice more clearly.Wireless transmissionThe Yealink SIP-T53C IP phone notonly features built-in Bluetooth 4.2 for Bluetooth headsets and mobile contact synchronization, but also built-in dual-band Wi-Fi for Wi-Fi connectivity, allowing easy access to 5G Wi-Fi connectivity. What's more, the IP phone can function with Yealink VC Desktop together to share content from a laptop, making collaboration much easier.High expandabilityTwo built-in USB 2.0 ports allow you to enjoy USB call recording with a USB flash drive. Through this USB port, you can also connect a wired/wireless USB headset without connecting the Yealink EHS36, and connect up to 3 Yealink EXP50 expansion modules that can be programmed with 180 paperless DSS keys.Efficient installation and supplyThe 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. In addition, the unified firmware and auto-p template that applies to T53/T53W/T54W/T57W phone models saves even more time and cost for businesses.