Portable Bluetooth Speaker with Built-in Mic, Rechargeable Outdoor Travel Mini Speakers Pairs with All Bluetooth Devices by ZDW ZDW Mini Bluetooth Speakers 120 days no reason to return ,money back 100%.our fan-favorite 18-month warranty and friendly customer service Small, stylish, compact, and extremely portable; fits easily into your bag or pocket so you can use it on the go. Cylindrical microphone design can reduce background noise during voice calls (speakerphone must be within 20cm). Built-in rechargeable lithium battery offers 4-5 hours of playtime and is charged via Micro USB Cable(charging cable included) Equipped with a 3.5mm audio cable for non-Bluetooth devices, like Mp3 Players,Laptop,Tablet; iPad Mini, iPad 4/3/2, Blackberry, Nexus, Samsung and Other Smart Phones with Bluetooth built-in. Transmission range: 8-10 m(with no obstructions).