Specifications: Supports Bluetooth wireless transmission. Built-in HD microphone, supports hand-free call. IPX7 waterproof, can be used in bathroom, sand beach, swimming pool, etc.. Item Name: Bluetooth Speaker Material: ABS Bluetooth Version: 4.0 Battery Capacity: 650mAh (Included) Frequency Response Range: 40Hz - 20KHz Output Power: 5W Sound Channel: 1 Playback Time: 4-5 Hours Speaker Number: 1 Effective Distance: within 10 Meters Extended Storage: Not Support Waterproof Level: IPX7 Features: Portable, Waterproof, Handsfree Call, Bluetooth Connection Bottom Diameter: 8.5cm/3.23" (Approx.) Height: 6.5cm/2.56" (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 Bluetooth Speaker 1 x Charging Cable 1 x User Manual