You can use PowerBank as a power source. In this case, you can put the clock everywhere! The clocks fit almost any interior.Size (LxWxH): 4.9(12.5cm)? 2"(5cm) x 2.7"(7.0cm). Case material: you can choose Iroko, padauk, wenge, bog oak. All materials are environmentally friendly. 24 or 12 hours format. Power cord is in the box (quality, copper). To avoid cathode poisoning, we have used a slot machine effect. And also thank you for your interest in my products. I also have the other amazing clocks in my store. This item is in the category "Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Parts & Accessories\Vintage Tubes & Tube Sockets". The seller is "luckysunboy" and is located in this country: UA. This item can be shipped worldwide.