Simple Matters, Ditto Vibrating Notification Device for People with Hearing Loss, Waterproof, iOS & Android Compatible, Black NEVER MISS A THING. Ditto notifies you to incoming calls, texts, emails, & calendar updates. SILENT BRACELET ALARM. Ditto has a silent alarm that wakes you and not your partner. NO MORE LOST PHONES. Ditto's virtual tether reminds you if you've gotten too far from your phone. CUSTOMIZEABLE. Customize your Ditto in the Mobile App. Compatible with Android & iOS. CLIP-IT. WEAR-IT. ANYWHERE. Each Ditto includes Wristband and Battery.