Features:   Wireless Bluetooth speaker is inspired by the Spetsnaz Helmet.  Aluminum alloy metallic mask and black polished UV coating provide outstanding texture and stunning appearance.  Bluetooth 4.2 brings high-fidelity wireless music streaming with a connecting range up to 30 feet. Enhance your audio experience without the hassle of wires.  The 34mm composite vibrating diaphragm forces low-frequency sound wave to rebound and spread around, delivers excellent bass performance, and ensures balanced dispersion of sound.  Portable size with a hanging hole on top with airdrop box-shaped packaging. Perfect as a gift.  RGB indicator lights hidden under the aluminum alloy metallic mask flashes along with music rhythm.    Specifications:   Connection: Wireless;  Wireless Technology: Bluetooth 4.2;  Working Platforms: Android (Android 4.4 or later) / iOS (iOS 7.0 or later);  Smart Power Off: Auto power off after disconnecting for 10 minutes;  Battery Capacity: built-in 500mAh rechargeable Lithium battery;  Working Time: 3 hours;  Charging Time: 2 hours;  Charging Voltage: 3.7V;  SNR (Signal-to-noise Ratio): ＞75dB;  Connectivity: Micro-USB (only for charging);  Cable Length: 19.69 in;  Package Size: 4.33 x 4.33 x 4.33 in;  Gross Weight: 0.82 lb.;    Package Included:   1 x Wireless Bluetooth Speaker;  1 x Micro-USB Cable;  1 x User Manual