Advanced Acoustic Technology Corp. (AATC) AKS-1308-1 Micro-Speaker offers 0.7W rated input power with 1W maximum input power and 1100Hz ±20% resonance frequency. This micro-speaker delivers a high sound output in a small size of 13mm x 13mm x 4mm. This compact design makes the AATC AKS-1308-1 Micro-Speaker ideal for small portable devices and in mass-produced consumer electronics.