Features: Experience immersive stereo sound with deep bass and 4 hour playing time in this IPX7 waterproof bluetooth-compatible speaker featuring pairing, USB/3.5 auc connection, and handsfreedly calling for outdoor and adventure. With shockproof designing, dustproof construction, 1200mAh battery this speaker delivers clear auditory via driver and bass radiators. Thrives in pool parties, hiking trails, backyard gatherings, or as a portable work place companion with conference ready microphones and flash drive music playing back. With technology for 360 surround sound while the detachable lanyard and small size designing ensures seamlessly portability across terrains. Specifications: Item: Wireless Speaker bluetooth-compatible: 5.0 Material: Plastic Size: about 16x7.7x4.7cm/6.3x3.03x1.85in Color: Black/Red/Green Waterproof：IPX7 Wireless Transmission: 10-15M Power: 5W 5V Playing Time: about 4hrs Battery: 1200mAh Charging：about 2hrs Package Includes: 1PC Wireless Speaker note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.