Features: 1.Wireless headset for Bluetooth enable cell phone at a range of up to 10 meters. 2.Bike-to-bike intercom for rider & passenger or two separate bikes up to 800-1000 meters. 3.Call out, call answer, call reject, call hang up. 4.Receive a cell phone call automatically. 5.Support audio transfer. 6.Support the last number redialing. 7.FM Radio function. Description: Enjoy the cell phone music through A2DP or connect GPS. Control cell phone music through AVRCP: forward, backward, play, pause. Automatic switching among Bluetooth cell phone, intercom, stereo music. With DSP echo cancellation and noise suppression technology, crystal clear voice quality is guaranteed in a high speed. Button panel is water-proof and sun-proof, while the design is durable. Audio cable to connect MP3, GPS, walkie-talkie and so on. Specifications: Model: BT-S3 Material: Plastic Color: black Size: 80*42*20mm Bluetooth version: 3.0+EDR Operating frequency: 2.4GHz Support Bluetooth protocol: A2DP, AVRCP Bluetooth support: Bluetooth Headset and Hands free Profiles with Automatic Detection Working range: 10 meters maximum (mobile phone) Type of battery : 450mAh rechargeable lithium battery Standby time: less than 300 hours Talk time: less than 10 hours (mobile phone) Talk time: less than 8 hours (intercom mode) Charging time: less than 3 hours Package included: 1 x Bluetooth Headset Receiver 1 x Stereo Headphones 1 x USB Cable 1 x Audio Cable 1 x L Shape Screwdriver 1 x Headset Clip 1 x Clip with Adhesive Tape 1 x User Manual Notes: 1. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 2. Due to different personal measuring techniques, there might be 1-3cm error of the physical. Thank you!