LiveRowing Concept 2 Rowing Machine Smartphone Holder &ndash; FREE Fitness App - Fits Most iPhones and iPods - Holds Your Smartphone While Working Out on Your Erg Machine FIRST: Slide the smartphone mount onto the back of your Concept2 Rowing Machine to attach it. 5 x 4 x 2.5 cradle holds phones as narrow as 2.25 inches to as long as 3.5 inches. Sits horizontally. NEXT: Connect your iPhone and Performance Monitor together via Bluetooth (PM5) or with a LiveRowing Connect Cable (sold separately). PM5 does NOT require a connecting cable. PM3 & PM4 models DO REQUIRE a connection cable. THEN: Download the FREE LiveRowing App to program your erg machine monitor for you. Choose from 100s of Free Featured Workouts, follow training programs, join Global Challenges, or compete against your friends. MAKE WORKOUTS FUN: Connect to the world while youre rowing by optimizing your workouts with fitness apps like LiveRowing (included) or Concept2 ErgData. QUICK CONNECT: Cradle works with the iPhone 4S and above, iPod Touch 5th generation, and some Android devices. Snap your smart phone in and start your rower work out!