I303S is a Bluetooth® interphone designed for the motorcycle rider and passenger who wish to have clear and reliable wireless communications while riding. It can also be connected to a Bluetooth® cell phone for hands-free communication Specifications: Talk time: 8 hours Stand-by time: 7 days Battery charging time: 2.5 hours Intercom working distance - Up to 200 m (220 yards) in open terrain Bluetooth 3.0 Bluetooth Profile - Headset Profile - Hands-Free Profile - Advanced Audio Distribution Profile (A2DP) - Audio Video Remote Control Profile (AVRCP) Package contents: I303S Bluetooth Built-in Speaker Unit Attachable Boom Microphone Hook and loop fastening pads for Speakers USB Power & Data Cable (Micro USB Type) Microphone Sponges