APEXEL HD 2X Telephoto Zoom Phone Camera Lens 4K

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 2X Telephoto Zoom Phone Camera Lens 4K Lens With CPL Star Filter For Huawei Samsung iPhone All Smartphone

Product description

【Compatible with All Single and Dual-camera Phones】 Including all iPhone models, Samsung Galaxy and Note, Google Pixel, Huawei and more.The product includes a 2x telephoto lens, metal clip, cleaning cloth and silicone storage bag
【Getting Closer 2x or 4x】 2x Telephoto lens gets you closer for tighter, crispier shots without using the digital zoom. Optimized for dual-lens devices, you can achieve 2x optical zoom when mounted over a single-lens camera or main lens of a dual-lens, 4x optical zoom when mounted over the iPhone telephoto lens
【When to Use This Lens】 Can be used for watching match, concert, travel, animal observes fans, newspaper-man shoots remotely, street portraits, adventure photos and travel. traffic administrative department to collect evidence, public security institutions to enforce the law and collect evidence etc
【Easy Use & Wide Compatibility】 Metal clip is equipped with a soft anti-skid pad, and won't leave any scratches on your phone, universal for iPhone XS Max,XR,X,XS,8,8 Plus,7,7 Plus,6S, Samsung/iPad/Android Smartphones. If your phone protective case is thin, you can use it directly, don't need to remove it.

Package included:

2x telephoto lens x 1
Lens Cap x2
Universal clip X 1
Cleaning cloth X 1
Black pouch X 1
User manual X 1
Retail box x 1

THE Introduction for CPL Lens and Star Filter Lens

CPL:Removes unwanted reflections from non-metallic surfaces such as glass or water to enhance color saturation.
Star Filter:creates a star pattern, in which lines radiate outward from bright objects. Star filter adds a dramatic cross flare to very bright areas. ldeal for photographs of night scene and ladies wearing jewelery or other objects with strong reflections.

Product detail

Technical specs:
Design: 4 elements 4 groups
Lens Coating: Multi-layer, low fare broadband anti-reflection
Field of View: 48 degree rectilinear
Source Nipple: M17*P0.75
Distortion: 2.3%
Lens Weight: 1oz

APEXEL--- Leading Camera Phone Lens Brand Manufacturer, focusing on technology and design innovation, producing high quality product.