Up to 4 hours of playtime. True Wireless Sound - connect another TWS compatible speaker for stereo sound. RGB Lighting with light show to the music. IPX5 Rated water resistant to take to the beach or pool safely. Voice control compatible with Google Assistant or Siri. Built-in FM radio. USB and Aux inputs support play non-Bluetooth devices. Hands-free calls through speaker. 2 x 2.5" Speaker. RMS output: 7W x 2. Rechargeable 3.7V 3000mAh Lithium battery. Frequency range: 80Hz-16kHz. Includes strap and charging cable.