VINA Portable Outdoor Wireless Bluetooth v4.0 NFC Mini Speaker for IPHONE / Tablet - Grass Green
1. Battery Capacity: 2000mAh. 2. Bluetooth Resolution: CSR4.0 up to 13 meters open field; Compatible with all Bluetooth devices 3. Support multiple Pair: Up to 8 devices 4. Frequency Response: 80Hz~20kHz 5. On/OFF Bluetooth switch