Products include 2 SOS and 2 receivers Suitable for installation in the bathroom/room or used with a neck strap Large receiving range. After pressing the SOS button, both receivers will sound at the same time. When assistance is needed, the receiver is activated with just one click. The SOS emergency call bell is suitable for homes, hospitals, nursing homes, etc. Range up to 300 feet/90 meters (open area) Easy to use, press the emergency button alarm to call for assistance. Comes with a neck strap for easy portability. The SOS button is splash-proof and can be fixed on the bathroom wall. Please note that it cannot be submerged in water, so it should be removed before bathing or showering Built-in 55 listening sounds and 5 volume selections