Bluetooth Headphones, Dreo [New Shockwave] Wireless Sports Noise Insulation Sweatproof w/Microphone Earbuds Headset Earphones w/Extended Battery Life for iOS and Android (Lime Green) Super Bass - Dreo bluetooth headphones shockwave technology provides super bass for your best music experience. Smart Wireless - No audio plug,connection will based on Bluetooth.non-delay after first pairing,automatically connects to your devices. Noise Insulation - Premium material will insult 80% noise from outside,give you the purest music environment. Applies to both input(Microphone)/output(Ear-buds) channels. Built in Mic automatically catches your voices and insult outside noises, allows you to talk through the device without taking it off. Sports Friendly - Specially designed for gym/sporting purpose, all parts are IPX4 sweat-proof and water resistant. Tangle-Free Wire - Widened Tangle-Free wire body provides a strong resistance from outside force. Extended Battery Life -With 1 extra battery attached to both sides of the ear-buds,every charge can be used 8-9 hours with light play, 4-6 hours with heavy play. Package Includes: Dreo [New ShockWave]Bluetooth Earbuds + Earbuds frame piece replacements(adjustable size in:L,M,S, and 1 sport sets) + Charging cord Manufacturer 1 year warranty will apply under the "Warranty Condition Guide".