Search term: Y30, Wireless, Bluetooth 3.0 Speaker, USB Flash, Stereo, Super Bass, MP3 Player, Portable For Outdoor Travel Features: Made by superior material with fine workmanship, it is durable enough. Equipped with high-efficiency power amplifier, low-frequency. Low power consumption and super bass effect. Delicate appearance design, it is fashionable. Small size and light, portable to carry. Descriptions: Bluetooth Connection: Switch on/off key Single press "M" key until the speaker prompt"Bluetooth Mode" Use your device to open the Bluetooth function and search "BT-SPEAKER", the speaker will prompt connect success. USB Flash Disk Function: Insert the USB flash disk and the speaker prompt "Play By USB Drive". The speaker will search the file and play automatically. Specifications: Material: plastic, metal Audio Port: TF, USB, AUX Speaker: double speakers 4 3W FM Frequency Range: 87.5-108MHz Frequency Response: 100Hz-16KHz Battery: 3.7V 1800mAh Lithium battery Playback Time: up To 5 hours Charging Time: 2.5-3.5 hours Charging Interface: micro-USB Input Voltage: DC 5V-500mAh Color: red & black, green & black, blue & black, black, orange & black, gray & black Size: 19.5x3.4x6.7cm Package included: 1 x Wireless Outdoor Bluetooth Speaker 1 x USB Cable Notes: 1.Due to the difference between different monitors,the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures. 2.Due to the manual measurement and different measurement methods, please allow 1-3cm deviation.Thanks