The KAKU Lecai KSC-614 is a versatile portable speaker designed for those who enjoy music on the go. It delivers 10 W RMS of power through two 45mm speaker units, covering a frequency range from 100 Hz to 20 kHz. You can connect your devices wirelessly via Bluetooth v5.0 or use the 3.5 mm AUX jack for a wired connection. For those who prefer offline playback, the device includes a TF card slot and support for USB flash drives, along with a built-in FM radio. Constructed from durable plastic, the speaker measures 173 x 65 x 65 mm and weighs 449 g, making it easy to carry in a bag. Its visual appeal is enhanced by integrated RGB colorful lights that add a dynamic atmosphere to your listening experience. If you have two of these units, you can use the TWS feature to create a True Wireless Stereo system for a wider soundstage. The internal 1800 mAh battery provides up to 4 hours of playtime, and it takes about 2.5 hours to fully recharge via the Micro USB port. This combination of multiple input options and a compact design makes it a practical choice for casual outdoor gatherings or personal use in a room.