Sound for any all-day runway. The SoundLink Flex Bluetooth® speaker is the perfect chic musical sidekick, with a waterproof, dustproof, life-proof design that can handle whatever comes your way — with dazzling sound and deep bass. So whether you're storming the city, hanging by the beach, or just having friends over for dinner, the powerful SoundLink Flex helps you elevate the moment Microphones Built-in Microphone Sound Options Shielded Speakers, Speakerphone, SimpleSync, Full Range Speakers, Party Mode (When Enabling Two Speakers), PositionIQ, Stereo Mode (When Enabling Two Speakers) Noise Control Type Echo Reduction Audio cable included No Water Resistant IP67 Entire Product System 3.56" H x 7.93" W x 2.06" D (1.300 lb) Product Material Aluminum, Fabric, Nylon, Plastic, Silicone, Steel Battery Life 12 hours Battery Charge Time 4 hours Charging Interface(s) USB C PORT Wireless Connectivity Bluetooth, Wireless Connectivity Bluetooth Version 4.2 Bluetooth Range Up to 30 ft (9 m) Bose App Bose Connect App