Small portable wireless active speaker delivering great performance and stylish design. The upper speaker is built of aluminum with an anodized oxide coating for ideal look and feel. The lower section of the speaker is composed of PC + ABS and incorporates an LED status indicator. In partnership with Denmark's acclaimed Tymphany brand, we've implemented a fabric net design to preserve crystal clear sound and perfect bass & treble. Top mounted control buttons simplify use, allowing control of playback, volume, and other features. Power on/off - The aluminum top includes a hidden button. Just press and hold for 2 seconds to turn the speaker on or off. Bluetooth connectivity - Double-press the hidden button to pair a new device. Volume & playback controls - After pairing your Bluetooth device with the speaker, rotate the top in either direction to raise or lower the volume. Press the top at any angle to control playback. Advanced Bluetooth 4.1 is compatible with most Bluetooth-enabled devices and has a wireless range of up to 10 meters. It offers professional tymphany speakers with full bass, clear treble and 1200mAh battery with 7 hours of music playback. Specifications: Dimensions: 60.0 x 60.0 x 93.3mm; Bluetooth version: 4.1; Effective distance: 10 m; Music playback time: roughly 7 hours; Maximum output: 5W; Impedance: 4Ω; Battery capacity: 1200mAh 3.7V; USB power input: 5V/1A; Operating temperature: -10 ℃ to 40 ℃, Color: Black