Rotating wearable ring design, easy to adapt to more scenarios such as merchandise inventory, stock management and so on Adopts the latest Bluetooth mission technology, featuring strong anti-interference and stable reliability Easily scan traditional barcodes, digital screens and broken and hard-to-read codes Three-in-one connection mode, which can be freely switched according to different scenarios, unrestricted multi-compatibility connection Rugged hardware using highly integrated design solutions, no redundant removable components Performance parameters image sensor:640 x 480CMOS, 120FPS decoding ability:All common one-dimensional and two-dimensional barcodes; special one-dimensional and two-dimensional barcodes can be customized Recognition angle:Angle 30, elevation 60, deflection 60 Reading Tips:LED prompt, buzzer, vibration motor size:50 (W) x 30(H) x 50(D)mm weight:220g Material:ABS Color: As shown Cable standard:USB interface, cable length 120CM Earthquake resistance:IP42 (1.5m tumble drop) Working voltage:+ 5V DC 5% Working current:200mA working temperature:-20C~+50C storage temperature:-40C~+70C (The product appearance and printed words depending on the batch, but this does not affect use) Package Contents: 1 x Scanner Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.