This round wireless speaker is made of ABS plastic and is powered with a rechargeable Lithium ion battery of 3.7V.
It features Output/Power: 3W, Impedance 4O, frequency response of 20Hz-20KHz, SNR of 70dB, a transmission range of 10M (30 feet), and device must be charged prior to first use.
Charge time varies by device.
The minimum charge time is 2 hours. It has a playback time of approximately 90 minutes (depending on volume and usage).
2.25" Diameter x 2" D