Bluetooth Speaker Watch with colorful Lights: Portable watch design with 8 light patterns. NOTE: The two holes in the middle on the right side are not designed with lights, because the bottom is the charging port. Music Player and Excellent Sound Quality: This speaker could not only be used as a Bluetooth speaker, but also can be used as a MP3 Player. Support micro sd cards, makes this speaker an MP3 Player. TWS: Two speakers play music at the same time, and they are left and right channels, make up a stereo system. FM Radio: Support FM radio function, can search radio station automatically. Selfie Function: You can easily use selfie function in Bluetooth status, and at the same time still listening to your music. Hands free Call and Anti-lost : Alert sound will begin if speaker is disconnected beyond efficient distance in Bluetooth status. Note: The speaker can resist gentle water spray and splash but cannot be partially or fully submerged. Voltage: 3 Bluetooth Version: Bluetooth V5.0 + EDR Input Power: DC5V/500mA Output Power: 3W Sensitivity Ratio: 360mv SNR: 80db Frequency: 120HZ-20KHZ Charging Time: 2 hours, Play Time: 6 hours, Standby Time: 48 hours Notes : Please charge over 2 hours before the first use. Playing time varies with the volume Color: Silver Material: plastic Package Contents: 1*Watch Bluetooth Speaker 1*Charging Cable 1*Instruction Manual