Features: Advanced Bluetooth chip, clear sound and perfect quality, powerful bass and can enjoy unfettered music anytime, anywhere. Bluetooth 4.2 wireless transmission, working distance up to 10 meters. With Microphone, support Hands-free when answer calling. Support playing MP3 songs stored in the TF card. Support FM radio and USB flash drive. Descriptions: Compatible with all Bluetooth devices such as smart phones, tablet PCs, etc. Support external 3.5mm audio input terminals of all. Mini size and lightweight, portable to carry with. Specifications: Bluetooth version: V4.2 Battery capacity: 400mAh Charging time: 2-3 hours Output: 3W Input: 5V FM radio: yes SNR: ≥70db Interface port: USB, TF card slot, AUX-in Material: metal and ABS Size: 100*100*40mm Color: black, blue, red, golden, silver Package included: 1 x Bluetooth Speaker 1 x Charging 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!