Waterproof great for showers baths swimming pools boats fishing marine or outdoor exercise built in microphone hand free telephone calls possible answer calls with one press on the button right on it stops playback when receiving incoming call resumes playback after hanging up compatible with any bluetooth enabled device including apple iphone ipad ipod mac book samsung galaxy s4 and s3 galaxy note amazon kindle fire hd htc droid and one s nexus 7 nexus 4 and all mobile cel