The world's first purpose built watersports stereo. Designed and engineered in New Zealand by paddlers for paddlers. The Stereoactive is designed for the challenge of life on the water and engineered to deliver crystal clear audio. Sources: Bluetooth / USB / AM / FM / iPhone / Android / US Weatherband Made for iPod and iPhone: Apple IAP2 w/Lightning Connector Speaker Size: 2 x 2.5" Custom Design + Passive Radiator Amplifier Output Per Channel: Class-D / 40 watts (2 x 20W Stereo) Battery: Rechargeable lithium ion - 20 hours of use Charging Requirements: 110~220 Volt AC wall charger (supplied) Water Resistance Rating: IPx7 / Floats FUSION-Link Remote App - Bluetooth: Control via: Apple (w/lightning connector) and Android Garmin Smartwatch App via ANT: Garmin Smartwatches (VivoActive / HR, Fenix 3 / HR, Tactix Bravo, Quatix 3, D2 bravo) - Requires FUSION-LInk Garmin App Voice Prompts: 12 unique Multi-Language Voice Prompts Available for Download Mounting: Standard FUSION Puck Mount Supplied with screw and Adhesive Pad