• Duo LED light and wireless speaker made of Aluminum alloy. • Iron carabiner at top for easy on the go carry-along. • Power/Technology: Rechargeable Lithium Polymer battery, 3.7V; Capacity: 180 mAh; Input: 5V; Work Current: 40-60 mA; Sensitivity: 100±3dB at 2kHz; Frequency Response: 20Hz - 20 KHz; Transmission range: 10M (approx. 30 feet); Wireless V 4.2 • Playback time: approx. 2.5 hours, depending on usage. • Must be charged prior to first use. Charge time varies by device. Minimum 2 hours. • Instructions and charging cable included. • FCC Approved