Most likely, since the connector on the back is the same (same USB charging cable as the Time). However, the band sizes are different (14mm/20mm vs 22mm), so yo

Most likely, since the connector on the back is the same (same USB charging cable as the Time). However, the band sizes are different (14mm/20mm vs 22mm), so you would have to make a band specifically sized for the Round vs. the Time/Time Steel. Edit: Here's some confirmation on the smart strap support: http://developer.getpebble.com/guides/#hardware-comparison http://developer.getpebble.com/guides/#hardware-comparison