Features:
Input Voltage: 2-6S Lipo
BEC Output: No, Continue Current: 30A, Burst Current: 35A up to 10S
Support Damped mode, Oneshot125, Oneshot42, Multshot and Dshot.
Main IC: Silabs F396, MCU run 48MHz.
Switching speed is very fast, it has dedicated driver chip.
BLHeli_S Bootloader & Firmware.
BLHeli_S is designed for superior performance in multirotors, and uses hardware generated motor pwm for smooth throttle response and silent operation.

Specifications:
Brand name: Favourite (FVT)
Model: LittleBee-Spring
Item name: 30A Blheli_S 2-6S Brushless ESC
Input: 2-6S Lipo
BEC Output: None
Continue current: 30A 
Burst current: 35A up to 10S
Size: 35 * 18 * 6mm / 1.4 * 0.7 * 0.2in
Weight: About 9g (including wire)

There may be some deviation due to manual measurement.

Package information:
Package size: 8 * 6.5 * 1cm / 3.15 * 2.5 * 0.39in
Package weight: 11g / 0.4oz
Poly bag package

Package List:
1 * LittleBee Spring 30A ESC BLHeli_S