The Eco Buds are ideal for outdoor & aquatic activities. Connect to any 3.5mm audio jack and listen to your portable audio player with the waterproof IPX7 standard ear phones. From the pool to the gym to the jogging trail to the beach, the waterproof design are for use in all types of wet environments. The Eco Bud’s are included with Eco Pod waterproof audio case GDI-AQPOD90. The Eco Bud’s are also sold separately. To protect your audio device in wet environments an ECO case is recommended.