iHome Bluetooth Rechargeable Waterproof Speaker with 18-Hour Mega Battery.The iHome iBT155 Weather Tough speaker features a rugged design and is IP67 rated, so it is waterproof, shockproof and sand-proof. Bring it with you on any adventure, rain or shine, and enjoy 18-hours of audio. The iBT155 features 5 color changing accent lighting modes that pulse to the music for full-spectrum effects. Stream wireless audio via Bluetooth and take calls with the built-in speakerphone.