Focal length: 4mm
Joint specification: 1.25 inches (approximately 31.7mm)
Mirror material: metal aluminum
Lens material: optical glass
Lens coating: broadband green film
Thread specification: M28.6X0.6mm
Eye mask type: flip back type
Product volume: 33.5 * 33.5 * 42mm
Net weight: 35g
Gross weight: 57g
Packaging:
1x 4mm Eyepiece