Black Diamond

Astro 300

Entry dual-fuel headlamp: 3 AAA or BD 1500 battery, 300 lm

Current

Best value (based on RRP)

RRP £20, the maker's recommended retail price

The Astro 300 is Black Diamond's entry headlamp: 300 lumens with dimming and strobe settings, a digital lock and an IPX4 housing at 100 g, running on three AAA batteries or the BD 1500 rechargeable battery sold separately.

Key specifications

Overall score: 3.6 out of 10,Mid-rangeHow we score
Light output, brightest setting: 300 lm
Beam distance: 55 m
Burn time, brightest setting: 4 h
Power: Rechargeable or AAA batteries
Weight: 100 g
Dust and water rating: IPX4

Full specification

Light

Light output, brightest setting: 300 lm
Boost mode: No
Beam distance: 55 m
Light output, lowest setting: 6 lm
Figures to ANSI/PLATO FL 1: Yes

Burn time

Burn time, brightest setting: 4 h
Burn time, lowest setting: 140 h

Power and charging

Power: Rechargeable or AAA batteries
USB-C charging: No

Features

Red light: No
Automatic brightness: No
Lock: Yes

Weight and protection

Weight: 100 g
Dust and water rating: IPX4

Variants

4 variants

BD6206740004ALL1Graphite
UK model code
BD6206740004ALL1
RRP
£20
Compare Black Diamond Astro 300, Graphite
BD6206744004ALL1Azul
UK model code
BD6206744004ALL1
RRP
£20
Compare Black Diamond Astro 300, Azul
BD6206748001ALL1Octane
UK model code
BD6206748001ALL1
RRP
£20
Compare Black Diamond Astro 300, Octane
BD6206744064ALL1Creek blue
UK model code
BD6206744064ALL1
RRP
£20
Compare Black Diamond Astro 300, Creek blue

Alternatives

Chosen from the overall scores, recommended retail prices and sizes of the models on sale in the UK.

Similar

Within a point of its score, closest in score and size

Black Diamond
Deploy Run Light
Overall score 3.5 out of 10, Mid-rangeRRP £55
0.1 points lower
Petzl
NAO LT
Overall score 3.5 out of 10, Mid-rangeRRP £85
0.1 points lower
Petzl
TIKKA
Overall score 4.0 out of 10, Mid-rangeRRP £34
0.4 points higher

Better specified

More than a point higher in overall score

Ledlenser
H5R (2026)
Overall score 4.8 out of 10, Mid-rangeRRP £94.95
1.2 points higher
Ledlenser
H7R (2026)
Overall score 4.8 out of 10, Mid-rangeRRP £119.95
1.2 points higher
Ledlenser
HF4 (2026)
Overall score 4.8 out of 10, Mid-rangeRRP £34.95
1.2 points higher

Compare with

Each link opens the two side by side in the comparison.

Specifications last checked on 22 October 2026.

Sources (2) Close

Black Diamond UK store, Astro 300 (opens in a new tab) checked 22 October 2026
Covers: Status, Variants, Light output, brightest setting, Beam distance, Power, USB-C charging, Automatic brightness, Lock, Weight, Dust and water rating, Tagline, UK availability, Variants sold in the UK, UK RRP.
Black Diamond, Astro 300 instructions (M14511_C) (opens in a new tab) checked 22 October 2026
Covers: Light output, brightest setting, Boost mode, Beam distance, Light output, lowest setting, Figures to ANSI/PLATO FL 1, Burn time, brightest setting, Burn time, lowest setting, Red light.

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