... echo and noise reduction Model No.: BSK02portable mini bluetooth speakerKEY FEATURES*Best sound quality wireless speaker ... noise reduction, ensuresincreased speech claritySPECIFICATIONBluetooth:* Bluetooth Specification v3.0 system* Bluetooth® Profile Supported: HSP V1.2, ... Built-in Anti-noise Microphone,Interface:* 4 Button design: MFB, VOL+, VOL-, Slide switch,* LED Status Indicator: Blue, Red,* Mini ...