COOBST U-Shaped Electric Toothbrush for Adults, vs Martenit Ultrasonic Toothbrush for Adults
Updated August 2026 — COOBST U-Shaped Electric Toothbrush for Adults, wins on waterproof and design, Martenit Ultrasonic Toothbrush for Adults wins on battery and sales.
The COOBST U-Shaped Electric Toothbrush offers a more affordable option with robust features, while the Martenit Ultrasonic Toothbrush excels in advanced functionalities like wireless charging.
Why COOBST U-Shaped Electric Toothbrush for Adults, is better
Price
COOBST is cheaper by $10.50
Waterproofing
COOBST has IPX7 certification
User Comfort
COOBST has ergonomic design for full-mouth coverage
Why Martenit Ultrasonic Toothbrush for Adults is better
Charging
Martenit features wireless charging
Sales Rank
Martenit ranks higher at 55,169
Material Quality
Martenit uses food-grade silicone for safety
Overall score
Specifications
| Spec | COOBST U-Shaped Electric Toothbrush for Adults, | Martenit Ultrasonic Toothbrush for Adults |
|---|---|---|
| Charging Type | Standard | Wireless |
| Cleaning Modes | 4 Modes | 4 Modes |
| Water Resistance | IPX7 | Water Resistant |
| Material | Plastic | Silicone |
| Sales Rank | 243801 | 55169 |
Dimension comparison
Design and Build Quality
The COOBST U-Shaped Electric Toothbrush features an ergonomic U-shaped design that conforms to the natural shape of your teeth, providing complete 360° cleaning coverage. In contrast, the Martenit Ultrasonic Toothbrush also boasts a U-shaped design, but it emphasizes high-frequency sound vibrations to thoroughly clean teeth and gums. While both products offer a unique shape tailored for an effective brushing experience, the COOBST model emphasizes a robust waterproof build, certified to IPX7 standards, ensuring durability during use in wet conditions. The Martenit toothbrush uses food-grade silicone, which is designed for easy cleaning and reuse, making it suitable for home and travel.
Cleaning Modes
The COOBST toothbrush offers four distinct cleaning modes: Standard Clean, Pro Clean, Whitening Clean, and Rhythmic Massage. This variety allows users to choose the mode that best suits their oral care needs, catering to daily maintenance and deeper cleaning. On the other hand, the Martenit toothbrush also features four cleaning modes, including Powerful, Medium, Gum Care, and Whitening. Each mode is designed to address different dental care needs, from gentle gum massage to effective stain removal. Both toothbrushes provide versatile cleaning experiences, but the COOBST offers a more tailored approach with its specific modes aimed at distinct oral health benefits.
Battery and Charging
When it comes to battery and charging, the Martenit Ultrasonic Toothbrush has a significant advantage with its wireless charging capability. It can be fully charged in just three hours and lasts about one week on a single charge. The COOBST toothbrush does not specify its battery life or charging method, which may be a consideration for those looking for convenience in their dental care routine. While wireless charging offers convenience for travel, the absence of detailed battery information on the COOBST toothbrush makes it challenging to compare directly in this regard.
Waterproofing
The COOBST U-Shaped Electric Toothbrush is IPX7 waterproof certified, making it safe to use in the shower or rinse under water without damaging its internal components. This feature is essential for maintaining hygiene and longevity. In contrast, while the Martenit toothbrush is described as having super water resistance, it lacks a specific waterproof certification. This distinction could influence a user’s choice, particularly for those who prefer a toothbrush that can withstand exposure to water without concern.
User Experience
Both toothbrushes focus on user comfort and ease of use. The COOBST model features a dual-button design to easily switch between modes and an innovative LED indicator to display selected settings. The Martenit toothbrush also promotes user-friendliness with its automatic timer, ensuring effective brushing sessions of 30 seconds. Each device is designed for optimal comfort during use, but the COOBST toothbrush’s ergonomic design may provide a slight edge in comfort due to its full-mouth coverage, reducing missed spots during brushing.
Price Comparison
The COOBST U-Shaped Electric Toothbrush is priced at $21.49, making it about 33% cheaper than the Martenit Ultrasonic Toothbrush, which retails for $31.99. This price difference may appeal to budget-conscious consumers looking for effective oral care without breaking the bank. Despite the cost, both products offer competitive features, but the COOBST's lower price point could provide greater value for those seeking a quality electric toothbrush.
Sales Performance
In terms of sales rank, the Martenit Ultrasonic Toothbrush is currently positioned at 55,169, indicating a stronger market presence compared to the COOBST model, which ranks at 243,801. This suggests that the Martenit toothbrush may be more popular among consumers, potentially due to its features or brand reputation. While sales rank doesn’t directly correlate to quality, it can influence potential buyers looking for proven products in the electric toothbrush category.
Which should you buy?
If you’re looking for a well-rounded electric toothbrush with a focus on cost-effectiveness and essential features, the COOBST U-Shaped Electric Toothbrush is an excellent choice. It provides a comprehensive cleaning experience at a lower price, along with robust waterproofing and multiple cleaning modes. However, if you prioritize advanced features such as wireless charging and a more popular sales performance, the Martenit Ultrasonic Toothbrush could be the better option for you. Ultimately, your choice should reflect your specific oral care needs and preferences.

