Unique Qualities: 

• Made to Be Measured Externally
• Power Source: Runs on batteries; no plug is required.
• Vials of Bubbles Included: Not accessible
• Non-Portable Laser Devices: Laser Products
• Laser Power: ≥0.4 mW and <1 mW output
• Battery Specifications: No Battery Is Provided

Additional Details

Please take note that batteries are not included with this product owing to shipping limitations.

Regarding batteries: Two 1.5V AAA batteries are readily available at your neighbourhood grocery store.
Thank you for your understanding!