Comparison Console
Streamlight MegaStream USB vs Streamlight PolyTac 90
EDC Flashlights comparison. Compare price, weight, specifications, materials, and real-world use case.
Command Brief
Recommended read
Streamlight PolyTac 90 stands out as the lightest option for weight, with about a 11% gap from the closest alternative. Streamlight PolyTac 90 stands out as the cheapest option for retail price, with about a 34% gap from the closest alternative. Streamlight MegaStream USB stands out as the highest output option for max lumens, with about a 260% gap from the closest alternative.
Decision Signals
What stands out
Streamlight PolyTac 90 stands out as the cheapest option for retail price, with about a 34% gap from the closest alternative.
Streamlight MegaStream USB stands out as the most expensive option for retail price, with about a 53% gap from the closest alternative.
Streamlight PolyTac 90 stands out as the lightest option for weight, with about a 11% gap from the closest alternative.
Streamlight MegaStream USB stands out as the heaviest option for weight, with about a 13% gap from the closest alternative.
Streamlight PolyTac 90 stands out as the lowest output option for max lumens, with about a 72% gap from the closest alternative.
Streamlight MegaStream USB stands out as the highest output option for max lumens, with about a 260% gap from the closest alternative.
Streamlight PolyTac 90 stands out as the shortest runtime option for max runtime, with about a 71% gap from the closest alternative.
Streamlight MegaStream USB stands out as the longest runtime option for max runtime, with about a 247% gap from the closest alternative.
Specification Profile
Relative dimensions at a glance
Each axis is normalized against the largest raw value among the products in this comparison. Farther outward means a larger value, not necessarily a better result. Axes with an unverified value are omitted.
Price & carry
Retail price
US$148Most expensive
US$96.99Cheapest
Weight
153 g (5.40 oz)Heaviest
136 g (4.80 oz)Lightest
Length
134 mm (5.28 in)Longest
112.5 mm (4.43 in)Shortest
Output
Max lumens
1800 lmHighest output
500 lmLowest output
Max candela
26000 cdHighest candela
7000 cdLowest candela
Beam distance
322 m (1056 ft)Highest
167 m (548 ft)Lowest
Max runtime
780 minLongest runtime
225 minShortest runtime
Power & durability
Battery type
SL-B34 rechargeable lithium-ion battery pack
1x Streamlight SL-B26 Li-Ion USB rechargeable battery pack or 2x CR123A lithium batteries
Charging type
USB-C charging port accessible without removing the battery
USB rechargeable
Rechargeable
Yes
Yes
IP rating
IPX7 waterproof to 1m for 30 minutes
IPX7 waterproof to 1m for 30 minutes
Impact resistance
2 m (7 ft)
2 m (7 ft)
Material
Machined anodized aluminum alloy body with unbreakable polycarbonate lens
High-impact, super-tough nylon polymer with textured grip
Use case profile
Best for
Everyday carryOutdoor useHigh-lumen requirement
Industrial useEmergency respondersHands-free lighting with clipWear on gear, belts, or vests during work
Common praise
Compact size with high outputSmooth and focused beamConvenient USB-C charging without battery removalDurable machined aluminum buildLong runtime on low settings
Versatile multi-fuel capabilityRugged and durable constructionEffective hands-free use with clip and carabiner D-ringGood brightness with balanced beam pattern
Common complaints
Charging port cover prone to opening accidentallyPocket clip not securely attachedHigh output can be too bright for close work
Relatively short max runtime on highest mode with CR123A batteriesNo specific complaints clearly stated in source