Description Bluetooth Wireless. Call Function. Micro SD Card Reader. 3.5mm Aux and Mini USB. Don’t let size fool you, the Volkano Titan Series Bluetooth Speaker packs a punch. Small enough to carry with you anywhere, this little speaker offers a host of additional features Lithium battery voltage: 3.7V Lithium battery capacity: 500mAh Recharging voltage: 5V Speaker Specifications: 40mm diameter, 2.6 ohm, 3W Frequency response: 60Hz – 18KHz Signal to noise ratio: more than 95dB
