Color/finish: black Bluetooth V2.1 Technology Enjoy Hands-Free Calls with Built-in Microphone Connect and Stream Audio from MP3 Players, Smartphones, Tablets, PC, etc. Compatible with Other Bluetooth-Enabled Devices Control Volume & Song Selection Wirelessly via Connected Device 2 Telephone Modes: Handset & Speaker IP-47 Waterproof & Dustproof Construction Easy Operation with Touch Button Controls Battery Life: 8 hours 10 Meter Bluetooth Range Includes USB Charging Cable Battery Capacity: 3.7V / 800mAh Battery Charging Time: 1.5 Hours Continuous Standby Time: 180 Hours Built-in Li-Polymer Rechargeable Battery Speaker Impedance (Output): 4-Ohm / 2 Watt Low Voltage Reminder Light Glossy UV Surface Treatment Attach or Hang Using the Retractable Hook Dimensions: 2.55'' (W) x 6.0'' (H) x 1.5'' (D Measures 2.55in (W) x 6.0in (H) x 1.5in (D)in Abs No 3.7V / 800mAh Imported Contents of Set: surf sound talk 2-in-1 waterproof Bluetooth speaker