[Long-Range Communication]: Our wireless two-way intercom system has a tested range of up to 300 meters. It can penetrate walls and floors, enabling clear communication between floors. Suitable for home, office, and caregiving use. [Slim and Sleek Design]: With a thickness of only 18 mm, this intercom is slimmer than many comparable models. The high-gloss UV-treated surface and plastic + silicone button structure provide a comfortable tactile experience. [Intelligent and User-Friendly]: Features include a talk indicator light and battery level indicator. Includes a charging dock for convenient charging. [High-Capacity Battery]: Powered by an 1800 mAh polymer lithium battery. Provides approximately one week of operation with typical use (5 calls per day). Standby time is 3–5 days. [Versatile and Adjustable]: Supports two frequency options (462 MHz and 434 MHz) to help reduce interference. Offers 38 ringtones and three adjustable volume levels for both ringtones and call audio. Both units must be used together as a pair. Power Supply: 1800 mAh polymer lithium battery Input: DC 5 V / 1 A Operating Temperature: –20 °C to 55 °C Transmission Distance: Up to 1000 meters in open space; 20–100 meters through walls or floors (1st to 8th floor) Frequencies: 462 MHz and 434 MHz Battery Life: Approximately 1 week per charge Charging Time: Approximately 5 hours Standby Time: 3–5 days Volume Control: 3-level adjustment for ringtone and call volume Ringtones: 38 options Color: White/Silver Material: Plastic Package Contents: 2 x Home intercom units Note: Actual color may vary slightly due to screen settings and lighting. Measurements may vary by ±1–3 cm.