Signal to Noise Ratio: 55dB Frequency Response: 50Hz- 20KHz USB Storage Capacity: 16GB Max INPUT:USB PLAYBACK OUTPUT:MP3/AM/FM AUDIO WATERPROOF (IPX6) DIGITAL MEDIA AM/FM AUDIO Receiver Dimensions-- 6.1”(15.5cm) x 4.1”(10.5cm) x 1.57”(4cm) . Installation Dimensions -5.5”(14cm) x 3.54”(9cm) x 3.14”(8cm) . FM Tuner: Tuning range: 87.9MHz-107.9MHz (USA） Pick up Preset: Short press numeric button and jump to next Preset station. Herdio Marine Radio and Speakers Kit(Black) Herdio Marine Radio and Speakers Kit(Black) Herdio Marine Radio and Speakers Kit(Black) Herdio Marine Radio and Speakers Kit(Black) Herdio Marine Radio and Speakers Kit(Black) Herdio Marine Radio and Speakers Kit(Black) Add to Cart Buying Options Add to Cart Buying Options Buying Options Add to Cart Customer Reviews 3.9 out of 5 stars 302 4.0 out of 5 stars 25 3.5 out of 5 stars 11 3.8 out of 5 stars 5 4.0 out of 5 stars 55 3.6 out of 5 stars 53 Price $108.99$108.99 $107.89$107.89 $123.49$123.49 $116.99$116.99 $116.99$116.99 $123.49$123.49 MODEL NO. VX280-61B 280-61B-47B 280-5104B-47B HMR-230BS-5104BX2-47B 230B-61B-47B 230B-6005B-47B Compatible with Bluetooth ✓ ✓ ✓ ✓ ✓ ✓ AM/FM Radio Receiver ✓ ✓ ✓ ✓ ✓ ✓ Speaker Size 4 inch 4 inch 4 inch 4 inch 4 inch 6.5 inch Speakers Max Power Output 120W 120W 160W 320W 120W 120W Speakers Quantity 1 Pair 1 Pair 1 Pair 2 Pairs 1 Pair 1 Pair