Uni-Ball UMN307 Signo Retractable Gel Ink Rollerball Pen 0.5mm Blue Box 12 polychomos Sensitivity: 90 dB ±3 dB

Sensitivity: 90 dB ±3 dB at 1 KHz

OEM: 981442

OEM: 1102102

unreal durability

Read at night without affecting your sleep quality with blue light reduction

Uni-Ball UMN307 Signo Retractable Gel Ink Rollerball Pen 0.5mm Blue Box 12 polychomos Sensitivity: 90 dB ±3 dBDescriptionSpecificationsShipping The uni ball Signo 307 Rollerball is a retractable gel pen preventing the nib from drying out and allows leak free storage. The 307 uses uni Super Ink that makes it waterproof, fraud resistant and permanent. This makes it perfect for legal documents or for scrapbooking. Its rubberised grip makes it comfortable to use for long periods. The Signo 307 has a newly developed nib makes it perfect for long essays. If you are