With this 37 in 1 ultimate package , you can do almost all the experiment you can think of for Arduino, never need to worry about you don't have proper materials again. 

Features:
Small size, high power, high efficiency, easy to use.
It do save you a lot of time.
You just need to focus on your project and make experiment for Arduino.
Be more creative, and make some amazing product.
Includes 37 basic components and sensors.
Compatible for Arduino, high quality modules.

Specifications:
Color: Black + Red
Item Size: Approx.4 * 2.5 * 3cm / 1.6 * 1.0 * 1.2in (One Module)
Item Weight: Approx. 10g / 0.3oz (One Module)
Package Size: 27 * 17 * 4.5cm / 10.6 * 6.7 * 1.8in
Package Weight: 390g / 13.8oz

Package List:
1 * Passive Buzzer Module
1 * Common-cathode Red & Green LED Module
1 * Knock Sensor Module
1 * Shock-switch Sensor Module
1 * Photo Resistor Sensor Module
1 * Push Button Module
1 * Tilt-switch Module
1 * RGB LED Module
1 * Infrared-transmit Module
1 * SMD RGB Module
1 * Hydrargyrum-switch Sensor Module
1 * Two-color Commoncathode LED Module
1 * Active Buzzer Module
1 * Analog-temperature Sensor Module
1 * Colorful Auto-flash Module
1 * Magnet-ring Sensor Module
1 * Hall Sensor Module
1 * Infrared-receive Sensor Module
1 * Analogy-Hall Sensor Module
2 * Magic-ring Module
1 * Rotate-encode Module
1 * Light Break Sensor Module
1 * Finger-pulse Sensor Module
1 * Magnetic Spring Module
1 * Obstacle Avoidance Sensor Module
1 * Tracking Sensor Module
1 * Microphone Sensor Module
1 * Laser-transmit Module
1 * Relay Module
1 * 18b20 Temperature Sensor Module
1 * Digital-Temperature Sensor Module
1 * Linear-Hall Sensor Module
1 * Flame Sensor Module
1 * High-sensitive Voice Sensor Module
1 * Humiture Sensor Module
1 * Joystick PS2 Module
1 * Touch Sensor Module