The Convoy L21B Long-range Hunting Flashlight is a powerful and highly customizable illumination tool designed for outdoor enthusiasts, hunters, and tactical users who require reliability and performance in challenging environments. Constructed from durable aluminum alloy, the flashlight combines a sleek, robust exterior with advanced functionality, making it suitable for demanding field use. It is equipped with high-performance GETIAN LEDs available in blue, green, and red variations, allowing users to adapt the light to specific tasks such as tracking, signaling, or preserving night vision. Each color operates within a precise wavelength range—blue between 450 and 460 nanometers, and green between 520 and 530 nanometers—ensuring optimal visibility and effectiveness in different scenarios. The smooth reflector and AR-coated glass lens work together to maximize beam intensity and distance, delivering a concentrated throw ideal for long-range spotting.

At the core of its performance lies a powerful driver capable of a maximum 8A output, supporting twelve programmable mode groups. This advanced configuration system offers users a unique level of control rarely found in similar flashlights. Activation and mode switching are intuitive: a full click of the rear tail switch turns the flashlight on or off, while a light tap cycles through available brightness levels. Entering the configuration mode involves tapping the switch twenty times while the light is on, triggering a series of coded flashes that indicate specific options. In Option 1, users can select from twelve sub-groups of lighting patterns, which include various combinations of brightness levels, strobe, SOS, biking, and battery-check modes. Each sub-group is identified by a distinct number of flashes, from one to twelve, providing a surprisingly efficient method for navigating settings without a digital interface. Once inside a sub-option, tapping the switch confirms the desired group, and if no action is taken, the light progresses to the next configuration step. Option 2 governs the mode memory function, enabling or disabling the flashlight's ability to recall the last used mode upon the next activation.

The flashlight supports tail-standing for hands-free use and features reverse polarity protection and low voltage warning, enhancing safety during operation. The battery-check function is especially useful in the field, as it allows users to assess remaining battery voltage through a simple series of flashes: one flash indicates a voltage below 2.95V, two flashes signify 2.95 to 3.25V, three flashes represent 3.25 to 3.55V, four flashes correspond to 3.55 to 3.85V, and five flashes show a voltage above 3.85V. These indicators ensure users are always aware of battery status, reducing the risk of unexpected shutdowns.

The Convoy L21B requires a single 21700 lithium battery, which is not included in the package. This battery type offers a higher energy density and longer runtime compared to standard 18650 cells, making it a suitable choice for a high-powered flashlight of this class. With a length of 170.5 millimeters, a head diameter of 62.6 millimeters, and a body diameter of 26.1 millimeters, the flashlight is ergonomically balanced for handheld use while maintaining a compact enough profile for easy storage in a pack or pocket. Its net weight of 212 grams, or 247 grams when packaged, reflects its solid construction without being overly heavy, striking a balance between rugged durability and portability.

Every design aspect of the Convoy L21B reflects an emphasis on functionality, resilience, and user control. The combination of a tough exterior, precise optical engineering, and deeply customizable light outputs make it an ideal choice for those who need dependable illumination in outdoor, tactical, or emergency situations. Whether scanning a distant trail, signaling teammates, or performing a battery check in the dark, the L21B delivers consistent performance with thoughtful features that enhance both safety and usability. This flashlight is not just a lighting tool but a versatile companion that adapts to your needs through intuitive controls and a robust, efficient design.

PARAMETER

12 groups:

1.click the switch to turn the flashlight on/off,tap the switch to select mode

2.if flashlight is turned on,tap the switch 20 times quickly to enter into config mode.(On a visual interface,as long as you click on an option, it means that the option is selected. The flashlight has no visual interface. It flashes to represent an option, and "tap the switch in the flashing process" means to select the option.)

   Option 1 (normal-flash 1 time + buzz-flash): tap the switch to enter into sub-option to select the mode group,If the user has no operation, the config mode will enter option 2.

       -------------sub-option 1.1 (normal-flash 1 time) : tap the switch to select mode group 1 (0.1%, 1%, 10%, 35%, 100%, strobe, biking, battery-check)

       -------------sub-option 1.2 (normal-flash 2 times) : tap the switch to select mode group 2 (0.1%, 1%, 10%, 35%, 100%)

       -------------sub-option 1.3 (normal-flash 3 times) : tap the switch to select mode group 3 (100%, 35%, 10%, 1%, 0.1%)

       -------------sub-option 1.4 (normal-flash 4 times) : tap the switch to select mode group 4 (1%, 20%, 100%, strobe, biking, battery-check, SOS)

       -------------sub-option 1.5 (normal-flash 5 times) : tap the switch to select mode group 5 (1%, 20%, 100%)

       -------------sub-option 1.6 (normal-flash 6 times) : tap the switch to select mode group 6 (100%, 20%, 1%)

       -------------sub-option 1.7 (normal-flash 7 times) : tap the switch to select mode group 7 (0.1%, 1%, 10%, 50%, strobe, biking, battery-check, SOS)

       -------------sub-option 1.8 (normal-flash 8 times) : tap the switch to select mode group 8(0.1%, 1%, 10%, 50%)

       -------------sub-option 1.9 (normal-flash 9 times) : tap the switch to select mode group 9 (50%, 10%, 1%, 0.1%)

       -------------sub-option 1.10 (normal-flash 10 times) : tap the switch to select mode group 10 (1%, 10%, 35%, 100%)

       -------------sub-option 1.11 (normal-flash 11 times) : tap the switch to select mode group 11 (100%, 20%, strobe)

       -------------sub-option 1.12 (normal-flash 12 times) : tap the switch to select mode group 12(100% only)

   Option 2 (normal-flash 2 times + buzz-flash): tap the switch to active the mode memory or inactive it,If the user has no operation,flashlight will enter into the last mode. 

battery-check instructions:

 <2.95V   1 flash,

2.95-3.25V 2 flashes,

3.25-3.55V 3 flashes,

3.55-3.85V 4 flashes,

>3.85V    5 flashes

SHIPPING
The final shipping cost and estimated delivery timeframe will be available to you during checkout. Currently, we offer 3 International shipping methods which are steady and easy to track. Priority worldwide shipping, Premium ( Partial countries) and a faster Express shipping. The estimated times stated below are not guaranteed. An international package could experience delays like postal strikes or severe weather or Cov-19 situation. All shipping ways, PO Box address is not acceptable.

If you don’t receive your order within the estimated time frame provided below and suspect that it might be lost in transit, please contact Flashlightgo Support ( support@flashlightgo.com ) and we can look into the order with the courier. Lost-in-transit requests must be submitted to Flashlightgo Support within 3 months of the date of shipping or before the courier archives the tracking information.

Option 1.
Express by DHL/UPS/Fedex/Aramax/SF etc ( there may be tax need to pay in this way),
The estimated time of delivery is usually 3-7 work days depending on the country. Includes detailed tracking and confirmation of delivery.

Option 2.
Premium ( 6-10days, All tax and Duty Paid),
All tax and duty are prepaid to carrier by Flashlightgo before shipping, so you dont need to pay any tax or duty when you get it.

Option 3.
Priority shipping(1-2 Weeks, average 10 days)
If we marked it is with all tax and duty paid, all tax and duty are prepaid to carrier by Flashlightgo before shipping, so you dont need to pay any tax or duty when you get it.

Learn more,Please click on here.

To ensure that you get the desirable product, we allow a seven-day product return period. Any product return application outside this period will not be entertained.
All returned product must be unused and the original package should be kept.

Return：
We do not offer return for personal products like socks and hats or food, magazine and fragile or dangerous products The original receipt must be available for application of return.

Discount products：
No product return for discount products

Gifts products：
If the item is marked as a gift when purchased and shipped directly to you, it cannot be exchanged , refunded or warranty.

Exchange：
We only replace items if they are defective or damaged.
Exchange service are offered only to wrong deliveries or product damage not caused by client. If needed, please email to info@flashlightgo.com.

Warranty
How long is the warranty period?
Flashlightgo warrants to the original purchaser that the Product(s) shall be free of any defect in material or workmanship for a period of one year for labor and one year for parts from the date of the original order except the items listed below:
Chargers,Batteries and Other Accessories: 3 months warranty

Should the Product(s) supplied by Flashlightgo prove defective because of improper workmanship or material as reasonably determined by us, Flashlightgo agrees, at its option, to either repair or replace the Product free of charge, excluding any shipping or handling charges.

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