APEXEL 8-24X30 Zoom Monocular Lens Multifunction

Mobile phone chargers can be roughly divided into travel chargers, cradle chargers and maintenance chargers. Generally, users mainly contact the first two. And the most sold on the market is the travel charger.
There are also various forms of travel chargers. The common ones are the cheap duck egg-shaped miniature travel charger, the ordinary desktop card board charger, and the high-end desktop charger with crystal display. Mobile phone charger, also known as: mobile phone adapter, is actually composed of a stable power supply (mainly regulated power supply, providing stable working voltage and sufficient current) plus necessary control circuits such as constant current, voltage limiting, and time limiting. The output parameters marked on the charger (referring to the line charger): such as output 5.0V/1A, output 5.0V/1500mA-11200... refers to the relevant parameters of the internal regulated power supply. Understand this truth, you will know that a (good quality) mobile phone charger is easy to change into a good quality regulated power supply.
The chargers of lithium-ion (li-ion) batteries commonly used in mobile phones use a constant-current and voltage-limited charging system, and the charging current is generally around C2—that is, the charging rate is two hours. For example, a 500mAh is charged at 250mA in about two hours 4. Constant voltage charging after 2V.
The lion is not suitable for the -DV/DT detection fast charging method used by the NIMH advanced fast charger, because the lion has a strict limit on the charging current. Lithium ion (Li+) is very active, and high current charging is prone to danger. The general user contacts are mainly the first two. The most popular travel chargers on the market are travel chargers. There are also various forms of travel chargers. The common ones include cheap duck-egg miniature travel chargers, ordinary desktop card board chargers, and high-end desktop chargers with LCD display. device. In view of the fact that most mobile phone users are non-professional users, the chargers basically have the function of full self-stop, and most of the travel chargers are fast chargers, and the charging time is about 1-3 hours. Many chargers on the market advertise that they are controlled by microcomputers, including some very cheap duck-egg-type miniature travel chargers. In fact, strictly analyzed from the charging circuit, only a small number of chargers can be truly controlled by microcomputers (MCU control). .
Some manufacturers claim to be "microcomputer control" when they use integrated blocks on the charging circuit. In fact, many low-cost design integrated blocks are cheap op amp integrated blocks, while some dedicated charging control integrated blocks have higher unit prices. , generally used in relatively high-end or brand-name chargers. So we can't trust the so-called microcomputer control, especially the cheap products. Many products are similar in appearance but have very different internal circuits, and their performance is also very different.

APEXEL HD 8-24x30 Zoom Telephoto lens Monocular monocular Long Range Powerful Foldable for Smartphones Hunting Camping

Features:

Adjustable Magnification:

Monocular 8x24 magnification has the best view in your outdoor adventures. To see a clear and bright image with the generous, light-gathering 30mm objective wide lens. Just feel free to enjoy bird watching, hunting, hiking, camping, traveling, wildlife, scenery, etc.

High Contrast and Resolution Images:

latest optics technology, the HD monocular equipped with the bak-4 prism and fully multi-coated(FMC) lens coating - strengthen the key function, guarantee superior light transmission and brightness, make your view brighter and clearer.

Wide Compatibity:

Comes with a 2021 newest quick alignment smartphone holder and tripods, Easy to install. Compatible with iPhone, Samsung Sony, and almost all other smartphones on the market. (TIP: If you find that the mobile phone's viewing angle is only a circle, please directly enlarge the mobile phone screen's display area to obtain a complete and clear view.)

Ergonomic design:

Ergonomic design helps you focus on your target quickly and accurately with one hand. Pull out the objective lens barrel to quickly aim at birds or other targets. And the durable rubber armor with stripes makes it comfortable for use, non-slip, and durable.

Small and exquisite, telescopic and portable:

The height of the high-magnification monocular is only 125mm, which is ultra-compact and can be put in a pocket for easy carrying. The broad field of view is 45.5-80.5/1000, which will provide you with a clearer and farther field of vision, which is very suitable for bird watching, hunting, hiking or sightseeing.

Specifications:

* Material：ABS + Optical Glass

* Lens Coating：Fully Multi-Coated Green Lens

* Magnification：8 X-24X(8 times to 24 times can be adjusted as needed)

* Objective Diameter：30mm

* Eyepiece Diameter：15mm

* Field of View：45.5-80.5M/1000M

* Angel of Vie：8X: 4.6° - 24X:2.6°

* Exit Pupil Diameter：3.7-1.2mm

* Exit Pupil Distance：17-14mm

* Closest Focusing Distance：3M

* Focus System：Stretching or rotating focus

* Tripod Adaptable：Yes

* Product Dimension：

Dia 44*127mm (shrinking length)

Dia 44*173mm (stretching length)

* Product Net Weight：156g

Product pictures: