The bride and I used BT Interphones for years, cheap and cheerful.
I had the GPS while she used them for music,(we don't talk) they lasted about 8 hours on a charge and worked perfectly for many years.
If you want more than 8 hours try buying a pair they are cheaper that way.
When I purchased one of my Zumo GPS units it came with a free U-clear set up and I have used that for a few years.
I eventually up graded the bride to U-Clear too but they are overkill for what you want.
Some of the 19 rides in my shed
2014 V2, Snoopy
2009 Wee, Pumbaa the pig
WR450F, The Blue Postie Bike
YZ250N smoker with rego, Stinky.
Yamaha MT09 (FZ09), The Scud missile.
Club Lead not Club Med.
He with the most toys wins.
Out of my depth in a puddle.
Live life on the edge you will see more that way.
Ridding a motorcycle keeps things in balance.
At the end of each trail and at the end of each day history is made.