best bluetooth speakers for spa

SPA Bluetooth Playback P20 | High Performance and Waterproof for Bath and Spa | Direct Sale from Factory

input:100-240V,1.0A

output: Sound channel 2.0(2*15W/ 4Ὼ)

Model:P20

Spa Bluetooth Playback B40 Player | Wireless Surround Sound System Music Player for Hot Tub | Affordable Purchase from Factory

Material：Plastic Sound System

Frequency Response：20Hz-20KHz

Model:B40 player