Yes, it is ok, and we would recommend utilizing the button controls to adjust the fishing reel. 

The buttons offer five casting modes, and each mode comes with a 4x4 range for precise adjustments.

No, it's not necessary. This fishing reel has a memory function, so you don't need to adjust it before every fishing trip unless you want to change your settings.

The fishing reel is resistant to short-term water immersion, ensuring optimal performance during rainy-day fishing.

 It is also suitable for saltwater use (After using the fishing reel in saltwater, promptly remove the side cover components for cleaning and maintenance)

Spool and fancy sound are features that can help you choose the right fishing reel model, such as the A100, B100, etc. Here's how they relate:

1. Spool: This refers to the line-holding component of the reel. Different models may have spools with varying sizes, materials, and designs that cater to specific fishing styles (e.g., finesse fishing, long casting) or target fish species. When selecting a reel, the spool capacity and performance are key considerations.

2. Fancy sound: This typically refers to the audible feedback produced by the reel during operation, such as the clicker sound when the drag system engages or during reeling. Some anglers prefer reels with specific sounds for aesthetic or functional reasons, as the sound can enhance the overall experience or provide helpful cues during fishing.

These features can help anglers differentiate between models and select the one that best suits their preferences and fishing needs. For example, the B50/B100 might have a lighter spool for finesse applications, while the A100/B200 could focus on power and durability for larger species.

The front brake typically refers to the braking force applied at the initial stage of the cast, which helps control the spool's speed as the line starts to unspool. This is crucial for preventing overruns during the critical acceleration phase.

The rear brake, on the other hand, refers to the braking force applied during the latter part of the cast, where it helps maintain control as the spool slows down, ensuring a smooth landing and minimizing backlash.

Together, the front and rear brakes provide a balanced braking system tailored to different casting conditions and preferences.

Electromagnetic boost refers to the use of electromagnetic technology to enhance the performance of a fishing reel. In this context, it typically involves an electromagnetic braking system that provides precise control over the spool's rotation during casting.

By using electromagnetic induction, the system generates braking force dynamically, allowing for smoother casts, reduced backlash, and better overall control. The "boost" aspect often means that the electromagnetic assist enhances spool speed and casting distance while maintaining stability and minimizing line trouble.

This feature is particularly useful when casting very lightweight lures (e.g., under 5g), as it can provide an extra boost to the spool, allowing it to start spinning more quickly and efficiently

Precision casting refers to the skill or technique of casting a fishing lure with pinpoint accuracy to a specific target location. This is especially important when fishing in areas with obstacles, such as near structures, under docks, or around vegetation, where fish are likely to hide.

Precision casting requires a combination of control over the reel, accurate aim, and the right casting technique to ensure the lure lands exactly where intended without spooking the fish or causing tangles. It often relies on fine-tuned equipment, such as high-quality reels with adjustable brakes and smooth drag systems, to achieve optimal results.