Features: Experience unparalleledly comfort with our Wireless Speaker, utilizing advanced highly technology to deliver auditory directly through the skull, ensuring remain unblocked for a superiorsly experience. Featuring a card slot and Wireless 5.0 connection, this speaker offers flexible music playback option and stable connection with various devices, essential music solution. Perfectly for insomniacs relief from anxiety, traveler who enjoy music , fitness enthusiasts needing workout motivation, and students with music. Whether in the bedroom for relaxation, used in office to reduce stress, enjoyed during outdoor activity, or serving as a car auditory system, this speaker adapts seamlessly to any environment. Long battery service of over 10hours, this USB speaker is a must for anyone elevates sleep experience. Specifications: Working temperature: 0~+50℃ Battery capacity: 500mAh Playing time: about 14hours of continuous playback Charging time length: about 2hours (not exceeding 4hours) Charging voltages: 5V Charging current: 1.0A Size:about 132x10x52mm/5.2x0.39x2.05in Color：Optional Package Includes: 1PC Speaker note: Please allow 1-2cm errors due to manual measurement,please make sure that do not mind before order. Due to difference between different monitors, the picture may not reflect the actual color the item.