Rechargeable Li-Ion battery in Wireless Unit. The item "STYCO Long Distance Wireless Video Door Phone Intercom" is in sale since Friday, February 17, 2017. This item is in the category "Home & Garden\Home Improvement\Building & Hardware\Doors & Door Hardware\Doorbells". The seller is "mdcameras" and is located in Surrey, British Columbia. This item can be shipped to Canada, United States.