Petzl TIKKA vs Black Diamond Cosmo 350-R Headlamp

Editorial Team
Last modified at June 7, 2026
Choosing the right headlamp can define the success of a camping trip or a night hike, balancing the need for bright illumination with comfort and battery reliability. The Petzl TIKKA and the Black Diamond Cosmo 350-R are two top contenders in the outdoor lighting market, each offering distinct advantages for different types of adventurers. While the TIKKA is celebrated for its lightweight design and versatile brightness settings, the Cosmo 350-R stands out with its integrated rechargeable battery and superior waterproofing. This comparison breaks down their performance across comfort, durability, and battery life to help you decide which light best fits your specific outdoor needs.

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Petzl TIKKABlack Diamond Cosmo 350-R Headlamp
TIKKACosmo 350-R Headlamp
Lumens

350 lm

High: 375 lm
Medium: 135 lm
Low: 6 lm

Beam Distance

230 ft

High: 210 ft
Medium: 148 ft
Low: 33 ft

Battery Type

AAA/LR03 or CORE rechargeable

Li-ion

Weight

3.32 oz

2.65 oz

Water Resistance

IPX4

IP67

Warranty

5 Years

3 Years

Battery Capacity

1250 mAh (CORE battery only)

1500 mAh

Run Time

MAX BURN TIME: 110 hr STANDARD: 12 hr MAX POWER: 2 hr

High: 5 hr
Medium: 10 hr
Low: 225 hr

Beam Type

Wide

Flood

Charging Time

3.5 hr (CORE battery only)

Full charge required; exact charge time not published

Burn Time

MAX BURN TIME: 110 hr STANDARD: 12 hr MAX POWER: 2 hr

High: 5 hr
Medium: 10 hr
Low: 225 hr

Battery Indicator

Battery charge indicator on lamp

Integrated battery meter display

Comfort

TIKKA

4.1/ 5.0

Cosmo 350-R Headlamp

4.4/ 5.0

Comfort is critical for headlamps, as gear that causes headaches or slips during movement can ruin an otherwise great outdoor experience. Buyers need a device that feels balanced and secure without feeling bulky, especially when worn for hours while setting up camp or navigating trails. The Petzl TIKKA is praised for being lightweight and fitting well, though some users note the texture and grip feel more aggressive than expected. In contrast, the Black Diamond Cosmo 350-R features a low-profile design with a recycled elastic headband that stays put without jiggling, earning high marks for its soft feel against the skin. With a higher rating and specific praise for its secure, non-bulky fit, the Cosmo 350-R takes the lead for extended wear.

Ease Of Use

TIKKA

4.2/ 5.0

Cosmo 350-R Headlamp

4.1/ 5.0

In the dark, intuitive controls are essential, allowing users to adjust brightness or switch modes without fumbling or removing gloves. A simple interface ensures that switching from a bright trail beam to a dim red light for reading happens instantly and safely. Both the Petzl TIKKA and the Black Diamond Cosmo 350-R utilize single-button interfaces that make cycling through dimming options and accessing different modes straightforward. The TIKKA offers quick selection of brightness or light color, while the Cosmo 350-R includes features like a digital lockout and a red light bypass to prevent accidental mode changes. Since both products excel in simplicity and offer comparable user experiences with their single-button designs, this category ends in a tie.

Durability

TIKKA

3.6/ 5.0

Cosmo 350-R Headlamp

4.1/ 5.0

Durability determines whether a headlamp can withstand the rigors of rain, drops, and rough handling in rugged outdoor environments. Buyers look for robust construction and high water resistance ratings to ensure the light survives torrential rain or accidental submersion. The Petzl TIKKA is generally reliable but has drawn concerns regarding the durability of its plastic components and magazine-like battery housing, suggesting it should be handled with care. Conversely, the Black Diamond Cosmo 350-R is built with robust polycarbonate material and boasts an IP67 rating, meaning it is completely waterproof and dust-proof, capable of surviving submersion in a meter of water. Given the significant difference in water resistance and build confidence, the Cosmo 350-R is the clear winner for durability.

Brightness

TIKKA

4.6/ 5.0

Cosmo 350-R Headlamp

4.6/ 5.0

Brightness is the primary function of any headlamp, directly impacting visibility on dark trails and the ability to perform tasks like cooking or gear repair. Users need a beam that provides excellent visibility in low-light conditions without creating harsh glare or leaving dark spots. Both the Petzl TIKKA and the Black Diamond Cosmo 350-R are highly regarded for their brightness, delivering impressive lumens that provide excellent visibility for most outdoor activities. The TIKKA offers a wide beam that users find highly effective, while the Cosmo 350-R pumps out 350 lumens with a balanced flood beam that is genuinely impressive. Since both products receive top-tier ratings and are praised for their ability to light up dark environments effectively, they are tied in this category.

Battery Performance

TIKKA

3.4/ 5.0

Cosmo 350-R Headlamp

4.4/ 5.0

Battery performance dictates how long a light will last on a single charge or set of batteries, which is crucial for multi-day trips where resupply is impossible. Buyers value long runtimes and the convenience of rechargeable options over the hassle of carrying spare disposable batteries. The Petzl TIKKA offers decent battery life but suffers from inconsistent performance with non-rechargeable options, often requiring users to carry spares for longer trips. The Black Diamond Cosmo 350-R features an integrated 1,500 mAh lithium-ion battery that offers up to 200 hours on the lowest setting and includes a convenient battery meter to track power levels. With its superior runtime, rechargeable convenience, and reliable power management, the Cosmo 350-R is the definitive winner for battery performance.

Versatility

TIKKA

4.6/ 5.0

Cosmo 350-R Headlamp

4.7/ 5.0

Versatility allows a single headlamp to adapt to various scenarios, from high-power trail running to low-light camp reading or emergency signaling. A versatile light should offer multiple brightness settings, red light modes for night vision, and features like strobes for safety. The Petzl TIKKA is praised for its multiple brightness settings and red light feature, making it adaptable for different tasks and activities. The Black Diamond Cosmo 350-R matches this with several modes including full strength, dimming, strobe, and red night vision, which users describe as a real game-changer for different lighting conditions. Both lights offer a comprehensive suite of features that make them suitable for a wide range of roles, resulting in a tie for versatility.

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Conclusion & Final Verdict:

The Black Diamond Cosmo 350-R is the superior choice for most hikers and campers who prioritize long battery life, waterproof durability, and a lightweight, comfortable fit. Its integrated rechargeable battery and IP67 rating make it ideal for extended trips and wet conditions. However, the Petzl TIKKA remains a strong contender for those who prefer a longer warranty, a slightly longer beam distance, or the flexibility of using standard AAA batteries as a backup. If you need a rugged, long-lasting light for serious outdoor adventures, the Cosmo 350-R is the recommended pick.

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