WISO - Wireless Emergency Whistle

This wireless whistle instantly notifies your friends and family in an emergency. WISO uses a combination of Bluetooth technology and GPS tracking.

The whistle sends out pre-selected SOS messages to your friends or relatives via SMS or email. It also includes your current location and can even contact up to seven people at once. The whistle weighs only 12 grams and has batteries that last two months. WISO is available now and costs $51.