The patented and ergonomic design of the STEP 1150 provides users with a style, comfort and performance unsurpassed in Bluetooth headsets. Combined with STEP's proprietary Acoustic BubbleTM technology, the STEP 1150 virtually eliminates wind noise and surrounding sounds, providing both wearer and listener a clarity that is unequalled. Users can answer, initiate or end calls, increase or decrease volume, and mute/un-mute the microphone all with the simple touch of a single versatile button/ rocker control. The built-in echargeable Lithium-Polymer battery provides excellent talk and standby times. The STEP 1150 is compatible with most mobile phones, computers, and PDAs that incorporate the industry standard Bluetooth headset and hands-free profile version 1.2 & 1.1.