Over the Head Bluetooth Headset for Apple iPad/ iPad 2/ iPhone 3 3Gs 4 4S /and for all cell Phones that are Bluetooth enabled Call Waiting/3-Way Calling, Voice Activated Dialing (with enabled phone), One-Touch Call Answer/End/Redial, Touch-button Volume Control Over-the-Head Design with Boom Mic, Balanced & Lightweight, Included USB Cable and Charger, Charged & Ready to Go, Talk Time: Up to 8 Hours, Standby Time: Up to 250 Hours Charging Time: About 2 Hours, Bluetooth Version: v2.0, Bluetooth Profile: HSP & HFP, Weight: 4.8 oz. Compatible with: Apple iPad, Apple iPad 2, Apple iPhone, Apple iPhone 3G, Apple iPhone 3Gs, Apple iPhone 4, Apple iPhone 4 CDMA, Apple iPhone 4S Also Compatible with all Cell phone brands and Models that are Bluetooth enabled: 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 optimized sound quality stealthy and sporty quiet conversation even in a noisy room