Long Playback Time: The wireless bluetooth speaker is high capicity and rechargable,up to 15H playback time at 2/3 volume.Enjoy music from dawn to dark for per charge.A Good gift choice for hiking ,bicycling,camping... Lanyard Design: The small speaker is equipped with lanyard,so you can take the speaker with you anywhere anytime at ease,hang it on your backpack or put it in ,so conveniently. Compact and Light-weight: The wireless speaker is designed as an apple size,small and light-weight, Size:F3.1"x H2.48" Weight:6.3ounce. 5W Clear Sound:The portable wireless speaker is equipped with a 5W quality full-range driver to provide the Clear sound, suitable for personal use at home and outdoors. Seamless Connection: LENRUE K3 bluetooth speakers use the advanced bluetooth 5.3 technology to ensure fast and stable connection,you can pair the speaker to your cellphone,pad or tablet for louder sound when study on-line or enjoy music.