- Grace Digital Aqua Sounder accessory speaker- For use with the GDI-AQSTR400W system (use up to 10 speakers total with this system)- Fully submersible speakers for your hot tub, pool or bath!- Weatherproof submersible speaker- 3 Watts- Equiped with 2 ultra bright led mood lights- Up to 150 foot outside range- Up to 10hrs battery life (depending on volume)- Speaker controls: volume, power, scan, light- 900MHz analog transmission- Requires 6 AA batteries, not included- Speaker weighs 1lb. 11.4oz- Frequency response: 50hz - 20khz- SilverGDIAQSR40WA