EXTRA BASS for deep, punchy sound Sound Diffusion Processor expands sound far and wide Waterproof and dustproof (IP67 rated). Supported Codecs: SBC, AAC Up to 16 hours of battery life with indicator Compact portable design with multiway strap included Add an extra speaker for stereo sound Connect and stream music easily with Bluetooth Convenient hands-free calling, Frequency Transmission Range - 20 Hz–20,000 Hz (Sampling frequency 44.1 kHz) USB Type-C port