Portable Rectangle Bluetooth Speaker with Lanyard This rectangle Bluetooth speaker has got a frosted surface which presents matte texture and comfortable hand feeling. The speaker provides clear and natural voice, and the built-in microphone supports phone functions for most mobile phones in market. Small size with light weight, can be put into your carry-on bag. The inner polymer lithium battery is available for 10-hour battery life, which provide you lasting companionship and pretty melody everyday.  ・Dimensions: 12 cm x 3 cm x 6 cm ・Controls: on/off, volume, pause/play, FM, connect phone ・Battery Capacity: 5V 500mAh ・Frosted surface, comfortable hand feeling; ・Small and exquisite, mobile phone size only, and the braided lanyard design makes it more portable; ・Bluetooth 5.0, provides fast and stable sound quality, transmission distance up to 10 meters; ・Stereo sound and TWS pairing gives you immersive sound with rich bass, mids and highs, dynamic sound; you can purchase two wireless speakers at the same time to truly enjoy the surround sound by pairing the TWS function, it's an auditory experience that's truly unparalleled; ・Double unit sound quality, the high frequency sound is penetrating and the low frequency sound is strong; ・Built-in microphone for answer calls under Bluetooth mode; ・Support Micro SD(TF) and Bluetooth connecting, available for files of mp3/wav format; ・FM radio, one-touch operation to change channel; ・Customization: create any image, photo, logo or name to customize a gift for yourself or any others, it is also suitable to be used as corporate gift.