[Long-Range Communication]: Our wireless two-way intercom system is designed for long-range communication, with a tested range of up to 300 meters. It can penetrate walls and floors, allowing for clear communication from the 1st to the 8th floor. This makes it an ideal solution for elderly care, home, or office communication. [Slim and Sleek Design]: With a thickness of only 18mm, our intercom system is slimmer than similar products on the market, which are typically over 22mm thick. The slim design, combined with a high-gloss UV-treated finish and a plastic + silicone button structure, offers a superior tactile experience. [Intelligent and User-Friendly]: Our intercom system features user-friendly functions, including talk light and battery level indicators for easy monitoring. It also includes a charging dock for convenient smart charging, ensuring the device remains powered and ready for use. [High-Capacity Battery]: Powered by a 1800mAh polymer lithium battery, our intercom system lasts approximately one week under normal use (5 calls per day, 1 minute per call). It offers a standby time of 35 days, making it a reliable communication tool for home or office environments. [Versatile and Adjustable]: The intercom system supports two frequency options (462MHz and 434MHz) to help avoid interference. It offers 38 ringtone choices and 3 adjustable volume levels for both ringtones and call audio. Please note that the two units must be used together as a pair and cannot operate independently. Power Supply: Polymer lithium battery 1800mAh Battery Charging: DC5V/1A Working Temperature: -20C to 55C Transmission Distance: Up to 1000 meters in open space; 20100 meters through walls Working Frequency: B-gear frequency 462MHz, A-gear frequency 434MHz Working Time: Up to 1 week on a single charge under normal usage Charging Time: Approximately 5 hours for a full charge Standby Time: 35 days Sound Adjustment: 3-level volume adjustment Ringtones: 38 selectable options Ring Volume: 3-level adjustment (using standby mode volume key) Call Volume: 3-level adjustment (using volume key during call) Color: White Silver Material: Plastic Package Contents: 2 x Home Intercom Units Note: Light reflection and differences in display screens may cause slight variations between the color shown in the image and the actual product. Measurement accuracy may vary by +/- 13 cm.