[Long-Range Communication]: Our wireless two-way intercom system offers a tested range of up to 300 meters. It maintains clear communication through walls and floors, supporting use across multiple levels. Suitable for home, office, and caregiving applications. [Slender Design]: At just 18mm thick, this intercom is slimmer than many comparable models. Its high-gloss UV-treated surface and plastic + silicone button construction provide a refined tactile experience. [Intuitive Operation]: Features include a talk indicator light and battery status display for easy monitoring. Includes a dedicated charging dock for convenient, reliable power management. [Extended Battery Life]: Equipped with an 1800mAh polymer lithium battery. Provides approximately one week of typical use (5 calls per day, 30 seconds each) and 3–5 days of standby time. [Flexible Settings]: Supports two operating frequencies (462MHz and 434MHz) to help reduce interference. Offers 38 ringtones and three adjustable volume levels for both ringtone and call audio. Note: Two units are required for operation; individual use is not supported. Power Supply: 1800mAh polymer lithium battery Input Power: DC 5V / 1A Operating Temperature: -20°C to 55°C Transmission Range: Up to 1000 meters in open space; 20–100 meters through walls or floors (e.g., 1st to 8th floor) Operating Frequencies: 462MHz and 434MHz Battery Life: Up to 1 week per charge Charging Time: Approximately 5 hours Standby Time: 3–5 days Audio Adjustment