Know what's coming in on your smart phone. Anytime, anywhere, this instaLINK Wearable Smart Phone Alert Watch will keep you informed. Powerful vibration and non-intrusive flashing will alert you to calls, text and social media. You are always in connection with your smart phone with an out of range alarm that will send an alert if you are too far from your phone. Rechargeable battery gives days of standby time. Free App works with iOS 8 and above only. (Bluetooth 4.0 and above.) Charge InstaLink wearable smart phone alert for two hours before first-time use. Comes with a breathable and sweat-proof wristband. Battery lasts up to 7-Days on a full charge.