What's in the box:

Mini USB ANT+ Stick Receiver USB ANT+ Dongle for Zwift/Tacx/Wahoo/G-armin/Bkool Bicycle Trainer Compatible with Forerunner 310XT 405 410 (Standard)

Features:
ANT+ wirelessly communications protocol, up to 78 channels.
Receive ANT+ radio and translate it into USB protocol for computer software.
Easy to use and stable data transmission.
Mini size and lightweight, very convenient to carry.
Suitable for G-armin products and cycling games, must-have for cycling enthusiast.

Specifications:
Material: ABS & metal
Color: black
Working voltage: +5V
Interface: USB 2.0
Transmission distance: 0-5m
Channel number: up to 78
Working frequency band: 2.4GHz
Modulation: GFSK
Package weight: 15g / 0.53ounce
Package size: 130 * 110 * 20mm / 5.12 * 4.33 * 0.79in

Packing List:
1 * USB Stick