What I'm sending is just the main unit. There are no instructions or pamphlets. Currently, sound comes out when the switch is pressed, but this is not guaranteed after arrival. Please consider this as junk, with no returns or refunds, including scratches and peeling on the exterior. Originally, it's a delicate build and vulnerable to external pressure, and the power may turn off due to impact, vibration, or bending. I recommend this to those who are confident in their ability to repair issues like poor contact, as this is a rare item from the golden age of Japanese electronics. Here's how to disassemble the main unit (with photos) ↓ http://pepper.cool.coocan.jp/distant/icr-505.htm The following is a description ========== Built-in ceramic speaker, safe to keep with your credit cards. Card size that fits in a commuter pass case. A businessman's essential radio. AM Card Size Radio ICR-505 Standard price: 7,800 yen (excluding tax) Thinness: 5.9mm. Card size that fits snugly in a commuter pass case. Built-in ceramic speaker that is safe to keep with credit cards and magnetic commuter passes. Equipped with a low-power battery-saving IC. Economical design that allows for 100 hours of use with the speaker and 200 hours with earphones using a lithium battery. There is a storage space inside the main unit for a spare battery. You can rest assured even if the battery runs out at an important time. Power-saving auto-off that turns off the power about 60 minutes after power-on. Uses a lithium battery that has little performance degradation even after long-term storage.