Featuring large-capacity battery, this wireless speaker features long standby time. HiFi, loud and surround sound sound effect as well as HD-compatible calling experience of this wireless speaker is supported by its Bluetooth-compatible5.0 chip. It is constructed of ABS material. The length of this product is 4.9cm, width is 4.9cm and height is 3.3cm. This wireless speaker is suitable for being used in home, shop, outdoor, cycling and so on. Item Name: Wireless Speaker Material: ABS Model: M3 Bluetooth-compatible Version: 5.0 Transmission Distance: 10m Charging Voltage: 5V Speaker 36MM Frequency Response Range: 20Hz-20000Hz Power Supply Mode: Built-in Battery Battery Capacity: 350mAh(Included) Playing Time: 4H Playback Format: MP3, WMA, FLC, APE Features: High Fidelity, Subwoofer, HD-compatible Calling Size Details: 4.9cm x 4.9cm x 3.3cm/1.93" x 1.93" x 1.3"(Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Wireless Speaker 1 x Charging Cable 1 x User Manual