[Built-in battery clock]Built-in 1000 mAh rechargeable lithium battery, no need to be inserted to use, when fully charged, the maximum volume can be played continuously for about 6 hours, and the standby time is about 48 hours. Easily charge via USB cable, 2-3 hours to fully charge. [Three-level brightness]The electronic clock LED display has three brightness, you can choose the brightness freely, it is friendly to use at night and protect your eyes from being too irritating. [FM Radio & Bluetooth Speaker]High-quality Bluetooth 5.0 speaker for fast connection to all Bluetooth-enabled devices; Built-in FM radio with simple user interface, adjustable volume and clear sound. [ Alarm Clock]There are two alarm clocks that can be set and used separately. The alarm volume gradually increases to wake you up. This digital clock also supports 12/24 hour time format switching (double click "M"). [Dimming LED Display]This bluetooth speaker digital electronic alarm clock has an LED display, the time is clear at a glance. Colour:silver-white Material:plastic Size:116 x 51 x 33mm Package Contents: 1 x Digital Alarm Clock 1 x USB Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. ThreeLevel Brightness: The electronic clock LED display features three adjustable brightness levels, making it userfriendly for nighttime use and protecting your eyes from harsh light Dual Alarm Clock: Set and use two separate alarms with gradually increasing volume to wake you up gently. Supports 12/24 hour time format switching FM Radio & Bluetooth Speaker: Equipped with a highquality Bluetooth 5.0 speaker for quick connections to all Bluetoothenabled devices. Includes a builtin FM radio with an easytouse interface and clear sound BuiltIn Battery: Features a 1000 mAh rechargeable lithium battery, allowing for portable use without being plugged in. When fully charged, it can play at maximum volume for approximately 6 hours, with a standby time of about 48 hours. Charges via USB cable in 23 hours Dimming LED Display: The LED display ensures clear visibility of the time, even in low light conditions