The LG Bluetooth Headset HBM-900 - Original (OEM) SGBS0004701 defines versatility as a Bluetooth headset. With tri-microphone technology and a boom microphone, this headset features noise reduction and echo cancellation. Automatic voice control automatically increases and decreases call volumes based on surrounding noise. Multipoint technology allows for 2 devices to be paired simultaneously. This Bluetooth headset also features multi-functional keys providing many options.