Soundcore Pro+ The Premium Bluetooth Speaker with Super-Size Sound and Big Bass. From ANKER, the Choice of 20 Million+ Happy Users Industry-Leading Technology. Worry-Free Warranty. Serious Listening Professional-quality digital signal processing, 2 full-range drivers, and 2 tweeters deliver full-bodied sound. Enjoy luscious treble and rich bass at any volume for an immersive listening experience. Extended Bass Anker’s exclusive BassUp technology is built into Soundcore Pro+ to extend the low end and inject a hit of intense bass into every beat. 18-Hour Playtime Anker’s leading power management technology and an 8000 mAh Li-ion battery power up to 18 hours of continuous music. The built-in USB port with PowerIQ fast charging allows you to play music and charge your device simultaneously. Backyard-Proof Enjoy epic sound in practically any environment thanks to the robust build and IPX4 water-resistance which protects Soundcore Pro+ against rain, spills, splashes, and more. Enhanced Connectivity Equipped with Bluetooth 4.2, NFC, and an AUX port to ensure Soundcore Pro+ connects with virtually any device.