X-MINI v1.1. Frequency range: 120 - 20000 Hz, Impedance: 4 Ом, Signal-to-Noise Ratio (SNR): 89 dB. Headphone connectivity: 3.5 mm. Weight: 57.4 g. Battery life (max): 6 h, Battery recharge time: 1 h. Type: Portable speakers, Dimensions (WxDxH): 65.2 x 65.2 x 50.1 mm, Audio output channels: 1.0