Syncs to the free OMRON app on your iOS or Android devices for unlimited readings and the OMRON Health skill for Amazon Alexa-enabled devices * With a choice of pound or kilogram measurement display this body weight scale can be used by individuals up to 330 pounds (150 kg) and stores up to 30 readings for one user with unlimited storage on the free OMRON app * The durable tempered glass platform is enhanced with a protective shatterproof film and features one-touch power on and auto-power off after 10 seconds * Warranted to be free from defects in materials and workmanship appearing within 1 year from the date of purchase *