Description: Material:Plastic Input:100-240V /50-60Hz Output:5V/2A Connection Type:Bluetooth Interface Type:Dual-USB Output Power:3W S/N:≥70db Extended Storage:32GB Number of Speaker:2 Effective Distance:10m Play Format:MP3 Bluetooth Protocol:Bluetooth 4.1 APP Support:No Package included: 1*bluetooth radio+1*power cable+1*audio cable+1*button battery+1*manual Note: 1.1 inch=2.54cm 2.Please allow 0.2-1cm error due to manual measurement. please make sure you do not mind before you bid. 3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! 100% brand new and high quality. K11 Bluetooth alarm clock has the function of Bluetooth, TF, U disk, AUX audio cable connected to play music Dual alarm clock function (temporary alarm and long-term alarm can be set). The alarm clock 1 is long-lasting, and the alarm clock 2 is automatically turned off on the same day. The five-minute snooze function Can use the buzzer, TF card music, the sound of the FM radio as reminders of the alarm clock,can be used to adjust the volume of alarm clock freely Sleep automatic shutdown function, once for 15 minutes, up to 90 minutes