Trip 300 is ANT+ enabled, 2.4 GHz digital signal;DuoTrap S simultaneously transmits ANT+ and Bluetooth Smart wireless signals;Connect DuoTrap S simultaneously with Trip 300 and compatible Smart phone;Current, average and maximum speed;Trip distance, programmable odometer with auto start/stop;Clock (12/24-hour) and total ride time with pacer;Current, average and maximum heart rate, heart rate sensor sold separately;Includes: Trip 300 (Blendr-compatible) and universal mount, DuoTrap S;