Mini Speaker * Suitable for Mp3, CD, PC etc * Power supply: 2 X AAA Batteries * Dimensions: 30*85mm * Weigt: 40g Mini Speaker* Loudhailer mode: Dynamic Magnet shielded * Loudhailer diameter: 28mm * Loudhailer numbers:2pcs * Impedance:8Ω * Frequency response: 200Hz-20KHz* Output power: 1W X 2 * Power supply: 2 X AAA Batteries* Dimensions: 30*85MM * Weigt: 40g Mini Speaker (SP-2026)