Motorola Bluetooth H390 (Bulk Packaging) Up to 8 hours of continuous talk time, Up to approximately 8 days standby time. Snug fit and super-simple controls, Easy Pair technology helps simplify initial connection with a compatible phone. Version 2.0 Bluetooth wireless technology. Compatible with: Apple iPad, Apple iPad 2, Apple iPhone, Apple iPhone 3G, Apple iPhone 3Gs, Apple iPhone 4, Apple iPhone 4 CDMA. Also Compatible with all Cell phone Models that are Bluetooth enables: BlackBerry By RIM, Cal-Comp, Casio, Danger, HP, HP Palm, HTC, Huawei, Kyocera, LG, Motorola, Nokia, Pantech, PCD, Samsung, Sanyo, Sharp, Sony Ericsson, UTStarcom, and ZTE.