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Description
The Streamlight MicroStream USB is an ultra-compact 250 lumen rechargeable pocket torch for professionals who need dependable light on them every day.
The MicroStream USB is small enough to keep in a pocket or a bag, and its removable clip holds it on a pocket edge or on the brim of a cap for hands-free work. At 34.1 g (1.2 oz) and 9.83 cm (3.87 in) long it adds almost nothing to a daily carry.
A push-button tail switch gives momentary or constant-on operation, with a high mode of 250 lumens for 1.5 hours and a low mode of 50 lumens for 3.5 hours. The 350 mAh lithium-ion cell is charged in the light from any USB power source in 4 hours, and an indicator shows red while charging and green when charged.
Key features
- Two output modes — High gives 250 lumens, 1,150 candela and a 68 m beam, while low gives 50 lumens, 250 candela and 31 m for close work.
- USB recharging — The 350 mAh lithium-ion cell with on board safety circuit charges inside the light from virtually any USB power source in 4 hours.
- Charge status indicator — An indicator in the charge port shows red while the cell is charging and green once it is charged.
- Tail switch operation — The push-button tail switch selects momentary or constant-on operation.
- Removable pocket clip — The removable pocket clip holds the light in a pocket or on the brim of a hat for hands-free use.
- Durable aluminium body — Anodised aluminium construction with a non-slip knurled grip and an unbreakable polycarbonate lens.
- Water and impact resistance — The light is IPX4 water-resistant and tested to 1 m impact resistance.
- Cord and lanyard supplied — Supplied with a 5 in (12.7 cm) micro-USB cord and a lanyard.
Typical applications
- Everyday carry for technicians and maintenance staff working in cabinets, voids and other tight spaces.
- Hands-free inspection work with the light held on the brim of a cap.
- Security and patrol personnel wanting a discreet pocket light alongside a larger duty torch.
- Vehicle and roadside checks where a compact light is easier to handle than a full-size torch.
Technical specifications
| Light output | High: 250 lumens / 1,150 candela / 68 m beam distance / 1.5 hrs Low: 50 lumens / 250 candela / 31 m beam distance / 3.5 hrs |
| Battery | 350 mAh lithium-ion cell with on board safety circuit |
| Charging | USB rechargeable |
| Charge time | 4 hours |
| Mounting | Removable pocket clip, clips on brim of hat |
| Switch | Push-button tail switch - momentary or constant on operation |
| Body | Anodized aluminum construction with non-slip knurled grip |
| Lens | Unbreakable polycarbonate lens |
| Ingress protection | IPX4 water-resistant |
| Impact resistance | 1 m impact resistance tested |
| Length | 9.83 cm (3.87 in) |
| Diameter | 15.6 mm (0.61 in) |
| Weight | 34.1 g (1.2 oz) |
| Colour | Black |
In the box
- 1 × MicroStream USB - Includes 5” (12.7 cm) micro- USB cord and lanyard, black
- 1 × 5” (12.7 cm) micro-USB cord
- Lanyard
Model information
| Brand | Streamlight |
| Model | MicroStream USB - Includes 5” (12.7 cm) micro- USB cord and lanyard, Black |
| MPN | 66604 |
| Packaging | Box |




