The SP-14, a Bluetooth-compatible wearable speaker, allows you to enjoy music with a comfortable fit. While it has been used very little, the plastic has undergone hydrolysis, so the surface has been clear-coated. This eliminates any stickiness. Also, since hydrolysis doesn't show up in photos, please be careful with other products. It works without any problems. The included transmitter has also been tested and confirmed to be working. Laison Co., Ltd. - Model Name: SP-14 - Type: Wearable Speaker - Bluetooth: Yes - Color: Black - Accessories: Instruction manual, charging cable Thank you for viewing.