II Pack Intercoms Wireless for Home Voice Bidirectional Caller Ultra Long Distance PortableFeatures: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 even 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 usually over 22mm thick. The slim design, combined with a high-gloss UV-treated surface and a plastic + silicone button structure, offers a superior tactile experience.Intelligent and User-Friendly: Our intercom system is designed with user-friendlyFeatures, including a talk light and battery light display for easy monitoring. It also comes with a charging dock for smart charging, ensuring the device is always powered and ready for use.High-Capacity Battery: Powered by a 1800mAh polymer lithium battery, our intercom system can last for about a week with normal use (5 calls per day, 30 seconds per call). It alsoFeatures a standby time of 3-5 days, making it a reliable communication tool for your home or office.Versatile and Adjustable: Our intercom system offers two frequency options (462MHz and 434MHz) to avoid interference. It alsoFeatures 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 be used separately.Specifications:Power Supply Method: polymer lithium battery 1800mAhBattery Powered: DC5V/1AWorking Temperature: -20 degrees C to 55 degrees CTransmission Distance: Approximately 1000 meters of open space, 20-100 meters of partition walls, floors 1-8Working Frequency: B-gear frequency 462MHz A-gear frequency 434MHzWorking Time: Charge once for about 1 weekCharging Time: Approximately 5 hours when fully chargedStandby Time: 3-5 daysSound Adjustment: 3rd gear adjustableMusic Ringtones: 38 ringtonesRing Volume: Level 3 adjustment (standby machine volume adjustment key)Call Sound: Level 3 adjust call size (adjust volume key during call operation)Color: Black, White (optional)Product Size: 11.6 * 5.6 * 1.8cm/4.6 * 2.2 * 0.7inchCharging Dock Size: 7 * 5.6 * 2.9cm/2.8 * 2.2 * 1.1inchAttention: Two must be used together and cannot be used aloneNote:Due to the different display screen and light effect, the actual color of the item might be slightly different from the color showed on the pictures.Packing List:2 x Indoor Intercom2 x Charging Dock1 x 2.0 Small Screwdriver1 x Charging Station Charging Cable1 x Host Charging Cable1 x Instructions1 x Strong Adhesive