Audio Components Waterproof : This speaker is waterproof, making it perfect for outdoor activities and events. Bluetooth 5.3 : With Bluetooth 5.3, this speaker provides a stable and fast connection to your device. TF Card and FM Radio Support : This speaker supports TF cards and FM radio, allowing you to listen to your favorite tunes and shows without needing to connect to a device. and Lightweight : This speaker is and lightweight, making it easy to carry around and use on-the-go. Product specifications: Version:V5.3 Working distance:10M Snr: 85db Battery: 3.7V500mAh Normal volume playing time:1H Speaker driver: 45mm Power:5W Frequency response:50HZ-20KHZ Unit size:149*39*72mm Unit weight:about 210g Charging:5V/500mA Product Feature 1.International advanced wireless chip and circuit design techniques,support all wireless devices. 2.With Hi-Fi speaker, to make sure the clear and bright sound. 3.The wireless working distance is 10 meters, can connect all out wireless devices (cell phone/Tablect PC/ TV) to play music. 4.With AUX line in, can directly connect the outside devices, for example, tablet PC/TV/cell phones. 5.Support Micro SD card and USB card, play MP3 format . 6.With FM function, can search radio station broadcast automatically. 7.Built-in Mic for handsfree call. 8.support TWS Key and slot function: 1.Power switch:OFF is power off,ON is power on. 2.DC 5V slot: Use the standard Micro USB charging cable for power charging. 3.USB slot: It can decode and play MP3 format when put the USB card into the slot. 4.TF slot: It can decode and play MP3 format when put TF card into the slot. 5.AUX line in slot: Use the Mini 3.5 head input through outside devices. 6.When play music, Press short for last song, long press to turn down the volume. 7.when play music(USB card/TF card/LINEIN/ BT), press short to switch USB/TF/FM/BT.(switch to line in if via AUX cable to device).Keep the TWS speaker under BT mode without pairing ,press the M key for 3 seconds either of the speaker until hear a hint du du for TWS mode ,then can paire the mobile. 8.When play music(USB card/TF card/LINEIN/BT), press short for play/pause . under BT mode with mobile paired ,press short to answer a call ,press again to hand up . in FM mode,press short to search station automatically, press again to stop searching 9.When play music, press short for next song, long press to turn up the volume. NOTE: In the FM mode, put in micro charging cable to get better FM radio station.