Forerunner 255-255s; Charging-data Cable; documentation

Built with a slim design and an always-on, full-color display that’s light on the wrist and easy to read even in direct sunlight — with available sizes of 46 mm and 41 mm
Smaller-sized Forerunner 255S Music provides up to 12 days of battery life in smartwatch mode and up to 26 hours in GPS mode for a full picture of your health — from sleep to training
Download up to 500 songs to your watch, including playlists from Spotify, Amazon Music or Deezer (subscription required), and connect with your wireless headphones for phone-free listening