A: Hi, thanks for reaching out about Sony ULT FIELD 3 Bluetooth Wireless Speaker. ✅ Short answer Sony does NOT publish an official wattage (RMS) spec for the ULT Field 3 But real‑world info shows it’s roughly around 30–40 watts equivalent output If you have any additional questions, we welcome you to contact MyTGTtech at 833-848-8324 every day, between 7am-11pm CST.