PACKAGE - 2 x Matrix Membrane Keypad, 16-Key | DESIGN - 4 x 4 type, totally 16 keys, 8-pin 2.54mm pin pitch connector | STRUCTURE - Integral sealing structure formed by flat multi-layer combination | APPLICATION - Can be used with various circuit boards or other existed external input devices | DIFFERENCE NOTICE - Please allow 1-3mm measurement difference due to manual measurement and a certain degree of color difference caused by camera lenses, different phone screens, and different monitors

PACKAGE - 3 x External 5.1 Channel USB 3D Audio Sound Card, Black | FUNCTION - Instantly creates microphone in and audio out jack from any PC USB port | FEATURE - Multi-channel technology, strong virtual 5.1 channel dynamic sound effect | COMPATIBILITY - The External USB 2.0 Sound Card Adapter can work with all major operation systems | DIFFERENCE NOTICE - Please allow 1-3mm measurement difference due to manual measurement and a certain degree of color difference caused by camera lenses, different phone screens, and different monitors

High Compatibility: This 40-pin flexible flat ribbon cable is designed to be universally compatible with a wide range of devices, including LCD TVs, car audio systems, and DVD players, ensuring seamless connectivity and versatility across various electronics | Flexible and Durable: Made from good materials, this ribbon cable combines flexibility with durability, allowing it to bend and manesunlighter in tight spaces without compromising on performance or longevity | Reliable Signal Transmission: Engineered for optimal signal integrity, this cable ensures stable and efficient data transmission, minimizing interference and maintaining good audio and video output for your devices | Easy Installation: Featuring a user-friendly design, this ribbon cable is straightforward to install, making it ideal for both DIY enthusiasts and professional technicians who need a reliable connection solution without the hassle | Size Difference Notice: Please allow 1-3mm measurement difference due to manual measurement and a certain degree of color difference caused by camera lenses, different phone screens, and different monitors

PACKAGE - 50 pcs X SMD Passive Electromagnetic Buzzer | FEATURE - Small cubage, low wastage and high voice pressure | DESIGN - Plastic housing, 3-5V input, 2 terminals, 2000HZ resonance frequency | POWER - Complete drive circuit incorporated for direct operation from DC power source | DIFFERENCE NOTICE - Please allow 1-3mm measurement difference due to manual measurement and a certain degree of color difference caused by camera lenses, different phone screens, and different monitors