What do you refer to as a handset?
These are made for motorcycle riders. I have a similar unit but from a different manufacturer. It can be either linked to another unit or to a mobile phone. When linked to another unit, the range is usually a lot longer, up to 600 feet if I remember correctly. It is full duplex. This is usually enough for several motorcycles traveling in formation. When linked to a mobile phone or another typical Bluetooth device, the range is at the "standard" 10 meter (up to 30 feet) range.
Your wife will need another Smartpack if you want to talk to her without using a smartphone. Download Zello to both smartphones and you got a nice walkie-talkie with no range limit. Same can be accomplished with a cheap set of FRS radios with simple headsets.