Lighted pendant lamps work with pen battery. the pen is not inside the battery. when order is placed, it will be shipped as mixed. thank you for your understanding. please order with this in consideration. maximum 10 pieces of this product can be ordered. swordslife reserves the right to cancel orders over 10 units. more than 100 stocks are offered to be sold at the campaign price. Improved version for clearer understanding and better search visibility. Suitable for users seeking detailed and reliable product information.