The Streamlight ProTac 2.0 Headlamp (89001) delivers 2,000 lumens of hands-free lighting in a compact machined aircraft aluminum body. Powered by the included SL-B50® protected Li-Ion USB-C rechargeable battery pack — chargeable inside or outside the light — with TEN-TAP® programming for three user-selectable output programs. IP64-rated for dust-tight and water-resistant performance, 2-meter impact tested, and includes both rubber and elastic headstraps for a secure fit on bare head or over a hard hat. Backed by Streamlight’s limited lifetime warranty.

Output Modes

• High: 2,000 lumens | 241m beam | 2.25-hour run time
• Medium: 650 lumens | 130m beam | 4.5-hour run time
• Low: 110 lumens | 55m beam | 25-hour run time

TEN-TAP® Programming

Three user-selectable programs configurable via TEN-TAP programming:

• Program 1: High / Medium / Low
• Program 2: High only
• Program 3: Low / High

Key Features

• 2,000 Lumens Peak Output — High-output hands-free lighting for demanding fieldwork
• USB-C Rechargeable — SL-B50® Li-Ion battery pack charges via USB-C inside or outside the headlamp
• IP64 Rated — Dust-tight and water-resistant to 2 meters
• 2-Meter Impact Resistance — Tested for durability against drops
• Aircraft Aluminum Body — 6000-series machined aluminum with Type II MIL-Spec anodized finish
• TEN-TAP® Programming — Three user-selectable output programs via simple switch sequences
• Dual Headstrap System — Rubber and elastic headstraps included for versatile mounting on head or hard hat
• Limited Lifetime Warranty

Specifications

• Brand: Streamlight
• Model: ProTac 2.0 Headlamp
• Part Number: 89001
• Peak Output: 2,000 lumens
• Peak Beam Distance: 241m
• Battery: SL-B50® protected Li-Ion USB-C rechargeable (included)
• Charging: USB-C (in-light or external)
• Length: 4.92" (12.5 cm)
• Weight: 10.48 oz (297g) with battery
• Material: 6000-series machined aircraft aluminum
• Finish: Type II MIL-Spec anodized
• IP Rating: IP64 (dust-tight; water-resistant to 2 meters)
• Impact Resistance: 2 meters
• Color: Black
• Includes: SL-B50® battery pack, USB-C cord, rubber headstrap, elastic headstrap
• Warranty: Limited lifetime
• UPC: 080926890015

Frequently Asked Questions

How does the ProTac 2.0 Headlamp differ from the ProTac 2.0 Flashlight (89000)?
Both use the same SL-B50® battery and share the ProTac 2.0 platform, but there are key differences: the headlamp (89001) is IP64-rated (dust-tight, water-resistant to 2 meters) vs. the flashlight’s IP67 (fully waterproof to 1 meter for 30 minutes); the headlamp has a slightly shorter peak beam distance (241m vs. 262m); the headlamp does not have a strobe mode; and the headlamp uses rubber and elastic headstraps rather than a pocket clip and holster. Choose the headlamp for hands-free applications and the flashlight for situations where waterproofing and strobe are required.

Will the headstrap fit over a hard hat?
Yes — the included elastic headstrap is designed to stretch over a hard hat for hands-free lighting in PPE-required work environments. The rubber headstrap provides a more secure non-slip fit on a bare head. Both straps are included in the box.

What does IP64 mean and how water-resistant is this headlamp?
IP64 means the headlamp is completely dust-tight (6) and water-resistant to direct water spray and splashing from any direction (4). The 89001’s specification also notes resistance to 2 meters of water, making it suitable for rain and heavy splashing in outdoor jobsite use. It is not rated for sustained submersion — for fully waterproof submersion, the ProTac 2.0 Flashlight (89000) with its IP67 rating is the better choice.

Is the 25-hour low mode practical for full-day arborist work?
Yes — the 110-lumen low mode with a 25-hour run time provides ample illumination for ground-level inspection, rigging prep, and low-light tasks throughout a full workday on a single charge. For canopy work or overhead inspection requiring maximum throw, switching to high (2,000 lumens, 241m) gives the output needed, though at the reduced 2.25-hour run time. TEN-TAP Program 1 (High/Medium/Low) lets you cycle through all three modes as conditions change.