Bose Flex Bluetooth Speaker - WRM 10020.1 The built-in microphone

The built-in microphone

This lightweight

5Wh rechargeable lithium battery and works as a power bank with dual USB-A outputs

Bearing System with corrosion resistant stainless steel ball bearings

3Ah battery packs

Bose Flex Bluetooth Speaker - WRM 10020.1 The built-in microphoneBose Flex Bluetooth Speaker. STATE OF ART DESIGN: SoundLink Flex outdoor speaker is packed with exclusive technologies and a custom engineered transducer for deep, clear, and immersive audio at home or on the go CLEAREST POSSIBLE SOUND: Proprietary Position Qtechnology automatically detects the position of your portable Bluetooth speaker for optimal sound quality in any orientation or environment WATERPROOF WIRELESS SPEAKER FOR TRAVEL: SoundLink Flex