Check the listing for details. Retekess TD110 Wireless Calling System Wrist Watch 5 Alert Button Home Nursing. Color: Black, Condition: New. Listed at 79.99 USD. Feature： Support 8 languages; optional from EN/RU/PT/FR/DE/ES/IT/CH as your need; suitable for various occasions; such as noisy restaurant; cafe; library; church Alarm clock function; the function of wireless watch receiver can be memorized after it is powered off; can set up to 10 alarm clocks Expandable up to 999 pagers; supports pairing with multiple Retekess call pagers; don't worry about business increasing Updated material; ABS material; the shell of the caregiver pager adopts electroplating process; thick and durable strap; ultra-thin strap with a simple style Indicator light; wrist pager has a built-in 300mAh rechargeable battery; the indicator light becomes red when charging; becomes green when fully charged.