Unique Rugged Square Design with Splashproof, Shockproof and Dustproof make it suitable for outdoors and shower. Small and lightweight; With the lanyard, fits easily into your bag or pocket for on the go use, just set your hands free, making your travels more convenient. Featuring a large speaker cavity for excellent sound, this tiny but powerful speaker can fill any room with rich audio and clear and crisp music. The built-in 1500mAh rechargeable battery enables a breakthrough 8~10 hours of playtime so you can jam through a full day and it only takes 3-4 hours for you full charge the speaker. Included USB charging cable, it can recharge from your laptop, desktop, or powered USB hub Connect with any bluetooth-enabled device (Bluetooth 4.0) or just plug in with the traditional audio cable to start your tunes. NFC technology – Tap-to-pair with NFC technology for easy and instant connection (If your bluetooth audio device has NFC function).