Features: 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 suitable 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 surface and a plastic + silicone button structure, provides a comfortable tactile experience. Intelligent and User-Friendly: Our intercom system includes user-friendly features such as a talk light and battery indicator for easy monitoring. It also comes with a charging dock for convenient charging, ensuring the device remains powered and ready for use. High-Capacity Battery: Powered by a 1800mAh polymer lithium battery, our intercom system can last approximately one week under normal use (5 calls per day, 30 seconds per call). It offers a standby time of 3 to 5 days, making it a reliable communication tool for home or office environments. Versatile and Adjustable: Our intercom system offers two frequency options (462MHz and 434MHz) to help reduce interference. It includes 38 ringtone options and 3 adjustable volume levels for both ringtones and call volume. Please note that the two devices must be used together and cannot function independently. Specifications: Power Supply Method: 1800mAh polymer lithium battery Charging Input: DC5V/1A Operating Temperature: -20C to 55C Transmission Distance: Up to 1000 meters in open space, 20-100 meters through walls, floors 1-8 Operating Frequency: 462MHz (B channel), 434MHz (A channel) Usage Time: Up to one week on a single charge under normal use Charging Time: Approximately 5 hours for a full charge Standby Time: 3-5 days Volume Control: 3-level adjustment Ringtones: 38 options Ringtone Volume: 3-level adjustment (using standby mode volume key) Call Volume: 3-level adjustment (using volume key during a call) Color: Black, White (available options) Product Dimensions: 11.6 x 5.6 x 1.8 cm / 4.6 x 2.2 x 0.7 inches Charging Dock Dimensions: 7 x 5.6 x 2.9 cm / 2.8 x 2.2 x 1.1 inches Note: Two units are required for operation and cannot be used separately Note: Due to variations in display screens and lighting effects, the actual color of the item may slightly differ from the images shown. Package Contents: 2 x Indoor Intercom Units 2 x Charging Docks 1 x 2.0 Small Screwdriver 1 x Charging Station Cable 1 x Host Charging Cable 1 x User Manual 1 x Strong Adhesive Pad