Portable Bluetooth Speaker By Eineo. Wireless, Waterproof 2-in-1 Speaker with PowerBank for Phone Charging. Built-in Mic for Phone Calls. Works with iPhone iPad Android and Other Smart Devices. WATER-RESISTANT - Shockproof and dust-proof speaker that provides protection from harsh environments such as the outdoors, rain and shower. Features a rubberized rugged rectangle exterior for ultimate impact resistance. ADVANCED BLUETOOTH TECHNOLOGY - Eineo wireless Bluetooth speaker is an incredibly powerful speaker featuring Bluetooth 4.0 Technology and a CSR8645 chipset that offers crystal clear sound and a longer, 10 meter bluetooth connectivity range. HIGH-DEFINITION SOUND WITH SUB WOOFER - Crystal clear sound technology with a rich bass sound giving an impressive sub woofer effect to deliver the rich bass tones and superior sound. The speaker is compact and perfect for streaming music for personal use or parties too! LONG LIFE BATTERY -Powerful 5200mAh 3.7v lithium ion rechargeable battery (USB port) that provides up to 20 hours of continuous playback and 200 hours standby time. EXTRA FEATURE BUILT-IN POWER BANK to recharge your smart phone or tablet. UNIVERSAL DEVICE COMPATIBILITY - Works well with iPhone, iPod, Macbook, Samsung Galaxy S4/S5, Galaxy Note, Amazon Kindle Fire HD, Amazon Fire Phone, HTC One, Nexus 7, Nexus 4, Microsoft Surface plus Tablets, Smart Phones and PC's. WARRANTY - We offer a 100 Percent Risk-Free Lifetime Guarantee on all Eineo products for complete worry free buying. BEWARE OF NON-AUTHORIZED DEALERS: EINEO is the only authorized dealer of this product.