1. Transmission distance: The transmission distance of Macaron wireless speaker is 10 , which can provide you with three- surround type pleasant music anywhere in the home, which is very suitable for work, study, cleaning, etc. Power supply mode: USB 1pc USB charging Speaker size: 52mm/36 external Battery capacity: 300M/AH 4. design: using materials, the appearance is similar to cylindrical, the hand feels more comfortable, and the appearance is more beautiful. It is the first choice among gifts. 3. Multiple playback methods: support , and U disk playback, and the supports a capacity of 32G. The upgraded 4.0 can be easily paired and can be used on mobile phones, iPads, , tablets, laptops and other devices. Signal to noise ratio: ≥70db Technical Parameters： Product size: about 2.4*2.4*3in 1pc speaker Function: insert card, Output power: 5w Support function: TF/USB/FM//AUX Frequency response range: 60Hz-15KHz Expansion storage: 4GB Battery model: 502030 5. Long-lasting playback time: The high-quality lithium-ion battery can continuous playback for 8 hours, and it takes about 1 hour to fully charge. 2. Small and portable: Macaron speakers are compact in size and can be carried around. It can be used in office, study, bedroom, kitchen and bathroom. It is also convenient to put it in your pocket or backpack when traveling and other outdoor activities. Power supply mode: built-in lithium battery Transmission distance: 10 Product color: black, , blue, green protocol: 4.0 Play format: MP3, WMA Play time: 8 hours Package include Operation mode: button Powe Speakers Transmission Distance: 10 Power Supply Mode: USB Frequency Response Range: 60Hz-15KHz Product Size: About 2.4*2.4*3in Function: Insert Card, Gaming Desktop for Console Aux Speaker for Record Speakers for Projectors Indoor Computer Speakers Wi Soundbar Companion 2