KMASHI LED Bluetooth Speaker Built-in 44 RGB lights 4 Music Display Mode with Bass Powerful Sound Support TF Card for Party and Christmas Features: Cool and compact "X" design; Built-in 44 RGB LED lights, 4 music pulsating LED visual display mode best for party, home,office or anywhere; Latest Bluetooth 4.0 Technology - connect your device in 3 seconds, connection range up to 33 feet for convenient wireless freedom. Powerful Functions: Volume up/down, track skip, pause, play, power on/off. Play music by 4 ways - TF card, U disk, AUX(3.5mm audio port), or pairing digital devices via Bluetooth function. Excellent Sound Quality: A CSR 4.0 Bluetooth chipset, 2*3W rate power and enhanced bass resonator offer crystal clear and incredible sound quality. Long Use Time: 6 to 8 hours playtime at 75% volume powered by built-in 2000mAh rechargeable Li-ion battery. For saving power, the bluetooth speaker shuts off automatically after wireless connection is discontinued for 5 minutes. Enjoy music at any time and anywhere. What You Get: 1*Kmashi Colorful LED Light Bluetooth Speakers, 1*Micro USB Cable, 1*3.5mm Audio Cable, 1*User Manual, 1*VIP Card. 1-Year Warranty and Friendly Customer Service. Charge for 6 hours beofre first time use. When the power is low, there is a prompt voice&#034; low power&#034;, and the speaker will turn off after the prompt tone plays 3 times. In charging mode, red light means the battery is being charged, after fully charged , read light turns off, and green light is constantly on. In wireless mode, the blue light blinks slow. When IT card is in use: Blue light is constantly on; when Aux is in use: The blue light blinks every 3 seconds; when reading the U disk, blue light is constantly on. Don&#039;t put into the fire or heat. Don&#039;t put into the water or wet Please don&#039;t disconnect or reinstall this product without authorization. Don&#039;t throw this product into the trash can directly Before using this product, please check the voltage specification requirements If this product is smelly, noisy or overheating, please place it far away from person and other items,then find us for solutions. Adjust the volume to 30%, play leisurely music such as soft and lyrical songs for 20 hours. Do not play rock music, replay once every 3 hours for 2 days. Adjust the volume to 50%, play all kinds of music such as rock and roll, jazz etc for 30 hours.Replay once every 3 hours for 2 days. Adjust the volume to 70%, play super rock music,keep the wireless speaker working for 40 hours. Replay once every 3 hours for 2 days. After above 3 septs, the sound quality will be perfect.