AmpsAndWatts Wireless portable bluetooth v4.0 hi-fi speaker BeatBlock (Black) Bluetooth v4.0 + EDR +A2DP Wireless Technology Unbelievable HI-FI power sound and volume/bass for its size at 60Watt RMS Wireless portable bluetooth v4.0 hi-fi speaker Play your music wirelessly from your mobile device Full function remote control with BASS & TREBLE controls