Bluetooth Speakers, ECHTPower Stereo 10W Wireless Portable Speaker (Dual 5W Drivers, Subwoofer, Strong Bass, Aluminum-Alloy, Bluetooth 4.0, NFC, Built-in Microphone) Advanced Bluetooth 4.0 Technology Ultra-optimized version of Bluetooth with NFC connectivity to play music up to 30 feet away from your phone Attractive design speaker: Aluminum alloy full mental textured shell and silicone rubber button panel Compact Wireless bluetooth speaker loud sound: 2x1.5inch total up to 10W dual powerful acoustic drivers play a full-range, abundant stereo audio and loud sound in such a small portable size Bluetooth-enabled device from up to 33 feet (10 meters) away. Connect the bluetooth wireless speaker to music, games, movies, your TV, smartphones, tablets, and so much more - life is booming Long Playtime, Fast Recharge: Built-in rechargeable 2200 mAH battery, supports up to 8 hours playing time with a single charge. Recharge only needs 3 hours