Get a premium music-listening experience with the ECOXGEAR EcoPucks Bluetooth Helmet Audio Headphones. This headphones are optimized for helmet audio listeners, featuring large multi-functional buttons to control music, calls, and the Zello walkie-talkie function. It uses Bluetooth 5.0 connectivity to stream from up to 33 feet away, and has an EcoTalk microphone adapted specifically for Siri and Google support. DESIGN IPX7 water and snowproof USB-C port for fast mobile device charging Optimized for helmet audio liners Multi-function buttons for music and calls Zello walkie-talkie function Headphone jack cable for optional wired use 300mAh lithium battery TECHNOLOGY Bluetooth 5.0 connectivity streams from up to 33 feet Audio Share capability – share audio with 2 sets of EcoPucks at max distance of 20 feet EcoTalk microphone built for Siri and Google support capability SPECS Dimensions: 2” x 0.5” x 2” Unit Weight: 2 oz. Charging Time: 1.5 hours Input: 5V USB input 1.0 A Playing Time: 15 hrs. Drivers: 40mm Additional Details Style: GDI-EXPCBT101