Full multilayer coating high quality eyepiece, can zoom to any focal distance between 7mm to 21mm, choosing best magnification for your subject. | For viewing moon, planets, nebulae, star clusters and other heavenly body landscape and astronomy observation, high dispersion, wide field of view, very comfortable. | Fine workmanship, suitable for 1.25 inch /31.7mm astronomical telescope. | Zoom eyepiece not just eyepiece, high magnification to low magnification, short focal distance to telescopic, easy to adjust proportion, very practical. | Professional manufacturing, metal body, surface coating, excellent optical performance.

37mm 0.25X additional lens with super fisheye effect, wider picture range. | Suitable for all 37mm caliber camera lens, strong applicability. | Lens can divided into two parts, macro lens alone using has 12.5 times magnification effect, suitable for macro close-up shooting. | Made of high quality aluminum alloy and optical glass material, sturdy, durable and long service life. | Small size and lightweight, easy to carry and store, convenient to use.

Clapperboard made of acrylic organic material, sound clear and crisp, not easy to break. | Colorful wood with builtin magnet, combination together when clap, voice clear. | Professional manufacturing, can write on it with chalk that will erase easily. | Whether movie lover or amateur filmmaker, perfect choice for movie memorabilia. | Very suitable for role playing, editing, video production, movie film, camera photography, etc.

The GPIO cable can be connected to a 3.5 inch display for easily use | Professional designed for Raspberry Pi male to female GPIO cable | Possess 20cm length and 40pin in total, enough to meet your demands | This cable wire can be used to extend the GPIO of for Raspberry Pi | GPIO wire can be connected to T board, breadboard and other operations

Aluminum alloy material, integrated body designed, CNC precision processing, sturdy and durable, wear resistant. | Unique designed, can better protect your camera. | Flocking on inner side, to prevent scratching surface of the camera lens. | Good workmanship, reliable connection, ensures safety of the lens when using. | Professional manufacturing, stable characteristics and high reliability.

Made of quality aluminium alloy material, high strength, anti-deformation, anti-rust, durable. | Can be expanded camera adapter, convenient to use. | Lightweight and compact size, easy to carry and store. | Telescopic extension tube, can be adjusted according your need. | Suitable for astronomical telescope.

USB to 1284 print cable is a high-speeded conversion adapter cable designed for parallel printers. | Suitable for notebooks and desktops, and through parallel cables, parallel port printers can communicate directly with computer USB interfaces. | Widely used in home, study, living room, bedroom, office, business, conference, education, entertainment and other places. | Support for Windows 98 / for 98SE / for ME / for 2000 / for XP / for VISTA WIN7 or higher operating system. | The printing speeded is greatly improved, and the USB port is hot-pluggable, which is very convenient to use.

This sound card uses CMI/HT8738 chip. The chip's signaltonoise ratio reaches 120dB, PCI plugandplay interfacefull duplex playback and recordingHRTF 3D spatial positioning sound effects, supports dircet sound 3D and A3D interfaces. | Support for Windows 98 / for Windows2000 / XP / NT signal voltage (0.5V~5V). | Support 4channel surround sound output, support DLS sound library technology, support A3D 1.0 and DS3D, compatible with DirectSound 3D and EAX sound effects. Supports 24bit SPDIF, OUT and SPDIF IN at the same time, and supports optical fiber input and | This card supports music synthesizer, traditional sound card, and supportsfull duplex playback and recording. | Support Direct Music SPDIF digital audio indicators: 24bit stereo, 44KHzsound sampling recording and playback, 120dB sound quality full duplex playback recording.