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Description
Optical Power Meter OPM BOU350TFC, SC, ST adapters and 2. 5mm UPP Energy save mode Built in VFL (optional) Reference value storage Power autonomy of 100 hours 850 1300 1310 1490 1550 1625nm One year warranty and Three year recommended calibration interval Model BOU350T BOU350C Display Range 1310 1490 1550 1625: +10 ~ 70dBm 1310 1490 1550 1625: +26 ~ 50dBm 850 1300: +10 ~ 60dBm 850 1300: +26 ~ 40dBm Accuracy * 0. 2 dB Calibrated Wavelengths 850nm 1300nm 1310nm 1490nm 1550nm 1625nm
FC, SC, ST adapters and 2.5mm UPP
Energy save mode
Built in VFL (optional)
Reference value storage
Power autonomy of 100 hours
850/1300/1310/1490/1550/1625nm
One-year warranty and Three-year recommended calibration interval
| Model | BOU350T | BOU350C |
| Display Range | 1310/1490/1550/1625: +10 ~ -70dBm | 1310/1490/1550/1625: +26 ~ -50dBm |
| 850/1300: +10 ~ -60dBm | 850/1300: +26 ~ -40dBm | |
| Accuracy * | ± 0.2 dB | |
| Calibrated Wavelengths | 850nm / 1300nm / 1310nm / 1490nm / 1550nm / 1625nm | |
| Resolution | 0.01dB | |
| OPM Connector | FC & 2.5mm UPP (option: SC, ST) | |
| REF | Yes | |
| Automatic Power Off | No operation in 10 minutes (can be canceled), Low battery energy | |
| Build in VFL (Optional) | 1mW or 10mW or customize | |
| REF | Yes | |
| Auto Power Off | No operation in 10 minutes (can be canceled), Low battery energy | |
| Battery Charge | Yes | |
| Battery Life | Above 100 hours | |
| Power Supply | AA * 2 batteries or AC/DC power supply adapter | |
* at 20±3℃, CW, with FC connector, -10dBm, SM fiber
| Size(H*W*D) | 160mm * 75mm * 32mm | |
| Weight | About 180g | |
| Storage Temperature | -20 -- +60°C, < 90%RH | |
| Operating Temperature | -10 -- +50°C, < 90%RH | |
| Size(H*W*D) | 160mm * 75mm * 32mm | |
| Weight | About 180g | |
| Storage Temperature | -20 -- +60°C,90%RH | |
| Operating Temperature | -10 -- +50°C, < 90%RH | |
| Model | VFL |
| BOU350T = OPM(+10~ -70dBm) | Blank = N/A |
| BOU350C = OPM(+26~ -50dBm) | V01 = 1mw |
| V10 = 10mw |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 8 reviews
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Product Reviews
★★★★★ 5
Lightweight Sunscreen with Great Hydration
This sunscreen feels lightweight on the skin and blends in nicely without leaving a heavy or greasy feeling. I like that it gives SPF 50 protection while also adding hydration, so it works well as part of a daily skincare routine. It leaves the skin feeling soft and comfortable.
The formula sits nicely under makeup or can be worn alone for a natural look. It absorbs well and does not feel sticky, which makes it easy to reapply when needed. A great option for everyday sun protection with added moisture.
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Reviewed in the United States on April 24, 2026
★★★★★ 5
Best sunscreen
I really like this sunscreen. It feels lightweight on the skin and blends in easily without leaving a white cast, which is a big plus. The texture is smooth and moisturizing, but it does not feel oily or heavy. It works well for daily use, especially under makeup, and feels comfortable even on sensitive skin.
The SPF 50 PA++++ protection gives good peace of mind for everyday sun exposure. I also like that it has hyaluronic acid and collagen, so it feels more like skincare than just sunscreen. Overall, it is a great affordable Korean sunscreen and I would definitely recommend it.
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Reviewed in the United States on May 18, 2026
★★★★★ 5
My honest review
Lightweight Protection with No White Cast
I am very satisfied with this sunscreen. The texture is lightweight, it absorbs quickly, and it truly leaves a "no-cast" finish—without that white layer that many sunblocks tend to leave behind. Plus, it feels hydrating thanks to the collagen, so it works beautifully under makeup or on its own for everyday wear.
It offers excellent SPF 50+ PA++++ protection against UVA and UVB rays and leaves no greasy residue. The size is convenient for carrying in a bag or taking along on trips.
After using it for several days, my skin feels protected, soft, and comfortable, even in hot weather. I would definitely buy it again and highly recommend it to anyone looking for a lightweight, hydrating sunscreen with a natural finish.
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Reviewed in the United States on May 16, 2026
★★★★★ 5
I'm impressed
I'm delighted with this sunscreen. It has a super light texture that absorbs quickly and does not leave a greasy feeling, which is perfect for everyday use, even under makeup. It fulfills what it promises: it does not leave white residue, something that I value very much, especially in photos or when going out in the sun. In addition, it feels quite moisturizing thanks to collagen and hyaluronic acid, leaving the skin soft and with a natural finish
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Reviewed in the United States on April 20, 2026
★★★★★ 5
Love it
This has become my everyday sunscreen and I genuinely love it. It’s lightweight, super hydrating, and doesn’t leave that greasy feeling most sunscreens do. It blends in beautifully and sits perfectly under makeup, which is a must for me.
I also have sensitive skin and this hasn’t caused any irritation or breakouts at all. It just feels smooth, comfortable, and easy to wear daily. One of those products you actually look forward to using.
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Reviewed in the United States on May 3, 2026