here's something from me:
The past week I use Pioneer4You IPV D2 and I really like it.
Device is very small and sturdy (they say the smallest device with controlled temperatures on the market),
switch maybe even a little too hard, but it is not minus.
In power mode, the range is from 7W to 75W, and at a temperature of 100 to 300 C
The battery cover is held by rail and beads, but is strong enough and there is no risk of accidental opening.
In the box to receive device, silicone sleeve, charging cable and a manual.
The biggest minus of this mode is the charging port, did not put a micro USB rather than a round 3.5 mm,
so that if you plan to charge your device with cable, you must have the original cable with you,
you can not charge with cable from your cell phone.
Device has Yihi sx130h chip that is doing its job in joule and power mode.
Menu is not complicated, it is entered with six clicks on power button,
click on the fifth offer power off, and the sixth menu offers power mode or joule mode,
you change with the + and - and confirm that with the power button,
if you select power mode after that it offers a way out and then the + and - set how many watts you want,
and if you choose joule mode then offered to show the temperature in Celsius or Fahrenheit in,
then go set the temperature
and then a choice between ni200 and titanium coils.
And that's it as far as the menu.
In combination with goblin mini this device looks fantastic, small and compact, and works great.
Pros:
Device is very small
Works great
Removable battery The included silicone sleeve
Simple menu
Supports Ni200 and titanium
Cons:
No USB port for charging
charging only with a original cable
It is in fact the only complaint to this device
Main Features:
YiHi SX130H chip
Black billet aluminum body
Temperature control function
Powered by a single 18650 battery (batteries not included)
Sliding ball bearing battery back cover
Output Wattage: 7W-75W
Output Joules: 5J-50J
Output Voltage: 1.0V-8V
Output Current: 1A-25A
Input Current: 1.3A-30A
Input Voltage: 3.2-4.5V
Standard atomizer resistance: 0.2ohm-3.0ohm
Joule atomizer resistance: 0.05ohm-0.3ohm
Temperature range: 200-580degree Fahrenheit
Spring loaded 510 atomizer contact pin
510 atomizer connection
Micro USB charging port