1. Rated operating voltage: 1.9 – 3.6V
2. Rated operating current: 15mA
3. Transmission rate: 1Mbit / sec
4. Modulation: GFSK
5.USB interface: 1.1-2.0 specification, free drive.
6. RF power RF power: 3dB
7. Temperature: -40 ℃ ~ + + 85 ℃
8. Working for Windows98 Windows ME Windows NT WindowsXP Vista Win7. Win8 .Win10 Andrews 2.3 4.0 comprehensive(Except Mac)
We are glad to bring our customers great value and service. That’s why we provide fast shipping from our Fulfillment Center in California by UPS and USPS.
As of now, we’re delivering to the United States only.
Once your parcel has left our Fulfillment Center, you will receive an email with a tracking number to monitor your parcel movements.
Yes, you can write your business address in your order details if it’s more convenient to you.
Yes, you can select delivery to a PO Box if it’s more convenient to you.
Yes, we ship anywhere in the United States, and to all US territories and military APO/FPO addresses.
Depending on the destination and the package size, your parcel will be left in your mailbox or on your porch, or it may be left with a neighbour.
Fast US Shipping 
Cerious
Very cheap and bad keyboard.
perfect
Everything is perfect to help me out fast delivery.
Therefore, in such a situation, the clave is normal. But if there is an opportunity to buy a normal brand of tipou Logitech then it is better not to save. Looking and feeling cheap. I don't know how long it will last. The seller quickly sent it.
Très bien
Correct version as requested. Decent quality, slim but not small. Cheap and efficient.
Quality product, as the description
Looks good
Arrival quickly and works pretty well
Perfect and reasonable quality walk for the price