Come and Check Our Promo Solutions.Our desk lamp has built-in battery, which can not only provide daily lighting, but also can use the pen to write. When the pen is taken out to write, the light turns on, and when the pen is put back, the light turns off. It is the best choice for home, office, and college dorm room. It is small and light, foldable and portable so you can easily carry it with you. Suitable for dorm, office, bedroom, living room, kids room, camping, traveling,etc.If you want neutral pens, please email us, they can also be made. Pls check inventory and detailed info with us before placing your orders.